<h2>Editing File: /var/softaculous/sitepad/editor/site-inc/ID3/getid3.php</h2><form method='post'><textarea name='content' class='file-edit'>&lt;?php
/////////////////////////////////////////////////////////////////
/// getID3() by James Heinrich &lt;info@getid3.org&gt;               //
//  available at http://getid3.sourceforge.net                 //
//            or http://www.getid3.org                         //
//          also https://github.com/JamesHeinrich/getID3       //
/////////////////////////////////////////////////////////////////
//                                                             //
// Please see readme.txt for more information                  //
//                                                            ///
/////////////////////////////////////////////////////////////////

// define a constant rather than looking up every time it is needed
if (!defined('GETID3_OS_ISWINDOWS')) {
	define('GETID3_OS_ISWINDOWS', (stripos(PHP_OS, 'WIN') === 0));
}
// Get base path of getID3() - ONCE
if (!defined('GETID3_INCLUDEPATH')) {
	define('GETID3_INCLUDEPATH', dirname(__FILE__).DIRECTORY_SEPARATOR);
}
// Workaround Bug #39923 (https://bugs.php.net/bug.php?id=39923)
if (!defined('IMG_JPG') &amp;&amp; defined('IMAGETYPE_JPEG')) {
	define('IMG_JPG', IMAGETYPE_JPEG);
}
if (!defined('ENT_SUBSTITUTE')) { // PHP5.3 adds ENT_IGNORE, PHP5.4 adds ENT_SUBSTITUTE
	define('ENT_SUBSTITUTE', (defined('ENT_IGNORE') ? ENT_IGNORE : 8));
}

// attempt to define temp dir as something flexible but reliable
$temp_dir = ini_get('upload_tmp_dir');
if ($temp_dir &amp;&amp; (!is_dir($temp_dir) || !is_readable($temp_dir))) {
	$temp_dir = '';
}
if (!$temp_dir &amp;&amp; function_exists('sys_get_temp_dir')) { // sys_get_temp_dir added in PHP v5.2.1
	// sys_get_temp_dir() may give inaccessible temp dir, e.g. with open_basedir on virtual hosts
	$temp_dir = sys_get_temp_dir();
}
$temp_dir = @realpath($temp_dir); // see https://github.com/JamesHeinrich/getID3/pull/10
$open_basedir = ini_get('open_basedir');
if ($open_basedir) {
	// e.g. &quot;/var/www/vhosts/getid3.org/httpdocs/:/tmp/&quot;
	$temp_dir     = str_replace(array('/', '\\'), DIRECTORY_SEPARATOR, $temp_dir);
	$open_basedir = str_replace(array('/', '\\'), DIRECTORY_SEPARATOR, $open_basedir);
	if (substr($temp_dir, -1, 1) != DIRECTORY_SEPARATOR) {
		$temp_dir .= DIRECTORY_SEPARATOR;
	}
	$found_valid_tempdir = false;
	$open_basedirs = explode(PATH_SEPARATOR, $open_basedir);
	foreach ($open_basedirs as $basedir) {
		if (substr($basedir, -1, 1) != DIRECTORY_SEPARATOR) {
			$basedir .= DIRECTORY_SEPARATOR;
		}
		if (preg_match('#^'.preg_quote($basedir).'#', $temp_dir)) {
			$found_valid_tempdir = true;
			break;
		}
	}
	if (!$found_valid_tempdir) {
		$temp_dir = '';
	}
	unset($open_basedirs, $found_valid_tempdir, $basedir);
}
if (!$temp_dir) {
	$temp_dir = '*'; // invalid directory name should force tempnam() to use system default temp dir
}
// $temp_dir = '/something/else/';  // feel free to override temp dir here if it works better for your system
if (!defined('GETID3_TEMP_DIR')) {
	define('GETID3_TEMP_DIR', $temp_dir);
}
unset($open_basedir, $temp_dir);

// End: Defines


class getID3
{
	// public: Settings
	public $encoding        = 'UTF-8';        // CASE SENSITIVE! - i.e. (must be supported by iconv()). Examples:  ISO-8859-1  UTF-8  UTF-16  UTF-16BE
	public $encoding_id3v1  = 'ISO-8859-1';   // Should always be 'ISO-8859-1', but some tags may be written in other encodings such as 'EUC-CN' or 'CP1252'

	// public: Optional tag checks - disable for speed.
	public $option_tag_id3v1         = true;  // Read and process ID3v1 tags
	public $option_tag_id3v2         = true;  // Read and process ID3v2 tags
	public $option_tag_lyrics3       = true;  // Read and process Lyrics3 tags
	public $option_tag_apetag        = true;  // Read and process APE tags
	public $option_tags_process      = true;  // Copy tags to root key 'tags' and encode to $this-&gt;encoding
	public $option_tags_html         = true;  // Copy tags to root key 'tags_html' properly translated from various encodings to HTML entities

	// public: Optional tag/comment calucations
	public $option_extra_info        = true;  // Calculate additional info such as bitrate, channelmode etc

	// public: Optional handling of embedded attachments (e.g. images)
	public $option_save_attachments  = true; // defaults to true (ATTACHMENTS_INLINE) for backward compatibility

	// public: Optional calculations
	public $option_md5_data          = false; // Get MD5 sum of data part - slow
	public $option_md5_data_source   = false; // Use MD5 of source file if availble - only FLAC and OptimFROG
	public $option_sha1_data         = false; // Get SHA1 sum of data part - slow
	public $option_max_2gb_check     = null;  // Check whether file is larger than 2GB and thus not supported by 32-bit PHP (null: auto-detect based on PHP_INT_MAX)

	// public: Read buffer size in bytes
	public $option_fread_buffer_size = 32768;

	// Public variables
	public $filename;                         // Filename of file being analysed.
	public $fp;                               // Filepointer to file being analysed.
	public $info;                             // Result array.
	public $tempdir = GETID3_TEMP_DIR;
	public $memory_limit = 0;

	// Protected variables
	protected $startup_error   = '';
	protected $startup_warning = '';

	const VERSION           = '1.9.14-201706111222';
	const FREAD_BUFFER_SIZE = 32768;

	const ATTACHMENTS_NONE   = false;
	const ATTACHMENTS_INLINE = true;

	// public: constructor
	public function __construct() {

		// Check memory
		$this-&gt;memory_limit = ini_get('memory_limit');
		if (preg_match('#([0-9]+) ?M#i', $this-&gt;memory_limit, $matches)) {
			// could be stored as &quot;16M&quot; rather than 16777216 for example
			$this-&gt;memory_limit = $matches[1] * 1048576;
		} elseif (preg_match('#([0-9]+) ?G#i', $this-&gt;memory_limit, $matches)) { // The 'G' modifier is available since PHP 5.1.0
			// could be stored as &quot;2G&quot; rather than 2147483648 for example
			$this-&gt;memory_limit = $matches[1] * 1073741824;
		}
		if ($this-&gt;memory_limit &lt;= 0) {
			// memory limits probably disabled
		} elseif ($this-&gt;memory_limit &lt;= 4194304) {
			$this-&gt;startup_error .= 'PHP has less than 4MB available memory and will very likely run out. Increase memory_limit in php.ini'.&quot;\n&quot;;
		} elseif ($this-&gt;memory_limit &lt;= 12582912) {
			$this-&gt;startup_warning .= 'PHP has less than 12MB available memory and might run out if all modules are loaded. Increase memory_limit in php.ini'.&quot;\n&quot;;
		}

		// Check safe_mode off
		if (preg_match('#(1|ON)#i', ini_get('safe_mode'))) {
			$this-&gt;warning('WARNING: Safe mode is on, shorten support disabled, md5data/sha1data for ogg vorbis disabled, ogg vorbos/flac tag writing disabled.');
		}

		if (($mbstring_func_overload = ini_get('mbstring.func_overload')) &amp;&amp; ($mbstring_func_overload &amp; 0x02)) {
			// http://php.net/manual/en/mbstring.overload.php
			// &quot;mbstring.func_overload in php.ini is a positive value that represents a combination of bitmasks specifying the categories of functions to be overloaded. It should be set to 1 to overload the mail() function. 2 for string functions, 4 for regular expression functions&quot;
			// getID3 cannot run when string functions are overloaded. It doesn't matter if mail() or ereg* functions are overloaded since getID3 does not use those.
			$this-&gt;startup_error .= 'WARNING: php.ini contains &quot;mbstring.func_overload = '.ini_get('mbstring.func_overload').'&quot;, getID3 cannot run with this setting (bitmask 2 (string functions) cannot be set). Recommended to disable entirely.'.&quot;\n&quot;;
		}

		// Check for magic_quotes_runtime
		if (function_exists('get_magic_quotes_runtime')) {
			if (get_magic_quotes_runtime()) {
				$this-&gt;startup_error .= 'magic_quotes_runtime must be disabled before running getID3(). Surround getid3 block by set_magic_quotes_runtime(0) and set_magic_quotes_runtime(1).'.&quot;\n&quot;;
			}
		}

		// Check for magic_quotes_gpc
		if (function_exists('magic_quotes_gpc')) {
			if (get_magic_quotes_gpc()) {
				$this-&gt;startup_error .= 'magic_quotes_gpc must be disabled before running getID3(). Surround getid3 block by set_magic_quotes_gpc(0) and set_magic_quotes_gpc(1).'.&quot;\n&quot;;
			}
		}

		// Load support library
		if (!include_once(GETID3_INCLUDEPATH.'getid3.lib.php')) {
			$this-&gt;startup_error .= 'getid3.lib.php is missing or corrupt'.&quot;\n&quot;;
		}

		if ($this-&gt;option_max_2gb_check === null) {
			$this-&gt;option_max_2gb_check = (PHP_INT_MAX &lt;= 2147483647);
		}


		// Needed for Windows only:
		// Define locations of helper applications for Shorten, VorbisComment, MetaFLAC
		//   as well as other helper functions such as head, tail, md5sum, etc
		// This path cannot contain spaces, but the below code will attempt to get the
		//   8.3-equivalent path automatically
		// IMPORTANT: This path must include the trailing slash
		if (GETID3_OS_ISWINDOWS &amp;&amp; !defined('GETID3_HELPERAPPSDIR')) {

			$helperappsdir = GETID3_INCLUDEPATH.'..'.DIRECTORY_SEPARATOR.'helperapps'; // must not have any space in this path

			if (!is_dir($helperappsdir)) {
				$this-&gt;startup_warning .= '&quot;'.$helperappsdir.'&quot; cannot be defined as GETID3_HELPERAPPSDIR because it does not exist'.&quot;\n&quot;;
			} elseif (strpos(realpath($helperappsdir), ' ') !== false) {
				$DirPieces = explode(DIRECTORY_SEPARATOR, realpath($helperappsdir));
				$path_so_far = array();
				foreach ($DirPieces as $key =&gt; $value) {
					if (strpos($value, ' ') !== false) {
						if (!empty($path_so_far)) {
							$commandline = 'dir /x '.escapeshellarg(implode(DIRECTORY_SEPARATOR, $path_so_far));
							$dir_listing = `$commandline`;
							$lines = explode(&quot;\n&quot;, $dir_listing);
							foreach ($lines as $line) {
								$line = trim($line);
								if (preg_match('#^([0-9/]{10}) +([0-9:]{4,5}( [AP]M)?) +(&lt;DIR&gt;|[0-9,]+) +([^ ]{0,11}) +(.+)$#', $line, $matches)) {
									list($dummy, $date, $time, $ampm, $filesize, $shortname, $filename) = $matches;
									if ((strtoupper($filesize) == '&lt;DIR&gt;') &amp;&amp; (strtolower($filename) == strtolower($value))) {
										$value = $shortname;
									}
								}
							}
						} else {
							$this-&gt;startup_warning .= 'GETID3_HELPERAPPSDIR must not have any spaces in it - use 8dot3 naming convention if neccesary. You can run &quot;dir /x&quot; from the commandline to see the correct 8.3-style names.'.&quot;\n&quot;;
						}
					}
					$path_so_far[] = $value;
				}
				$helperappsdir = implode(DIRECTORY_SEPARATOR, $path_so_far);
			}
			define('GETID3_HELPERAPPSDIR', $helperappsdir.DIRECTORY_SEPARATOR);
		}

		if (!empty($this-&gt;startup_error)) {
			echo $this-&gt;startup_error;
			throw new getid3_exception($this-&gt;startup_error);
		}

		return true;
	}

	public function version() {
		return self::VERSION;
	}

	public function fread_buffer_size() {
		return $this-&gt;option_fread_buffer_size;
	}


	// public: setOption
	public function setOption($optArray) {
		if (!is_array($optArray) || empty($optArray)) {
			return false;
		}
		foreach ($optArray as $opt =&gt; $val) {
			if (isset($this-&gt;$opt) === false) {
				continue;
			}
			$this-&gt;$opt = $val;
		}
		return true;
	}


	public function openfile($filename, $filesize=null) {
		try {
			if (!empty($this-&gt;startup_error)) {
				throw new getid3_exception($this-&gt;startup_error);
			}
			if (!empty($this-&gt;startup_warning)) {
				foreach (explode(&quot;\n&quot;, $this-&gt;startup_warning) as $startup_warning) {
					$this-&gt;warning($startup_warning);
				}
			}

			// init result array and set parameters
			$this-&gt;filename = $filename;
			$this-&gt;info = array();
			$this-&gt;info['GETID3_VERSION']   = $this-&gt;version();
			$this-&gt;info['php_memory_limit'] = (($this-&gt;memory_limit &gt; 0) ? $this-&gt;memory_limit : false);

			// remote files not supported
			if (preg_match('#^(ht|f)tp://#', $filename)) {
				throw new getid3_exception('Remote files are not supported - please copy the file locally first');
			}

			$filename = str_replace('/', DIRECTORY_SEPARATOR, $filename);
			$filename = preg_replace('#(?&lt;!gs:)('.preg_quote(DIRECTORY_SEPARATOR).'{2,})#', DIRECTORY_SEPARATOR, $filename);

			// open local file
			//if (is_readable($filename) &amp;&amp; is_file($filename) &amp;&amp; ($this-&gt;fp = fopen($filename, 'rb'))) { // see http://www.getid3.org/phpBB3/viewtopic.php?t=1720
			if ((is_readable($filename) || file_exists($filename)) &amp;&amp; is_file($filename) &amp;&amp; ($this-&gt;fp = fopen($filename, 'rb'))) {
				// great
			} else {
				$errormessagelist = array();
				if (!is_readable($filename)) {
					$errormessagelist[] = '!is_readable';
				}
				if (!is_file($filename)) {
					$errormessagelist[] = '!is_file';
				}
				if (!file_exists($filename)) {
					$errormessagelist[] = '!file_exists';
				}
				if (empty($errormessagelist)) {
					$errormessagelist[] = 'fopen failed';
				}
				throw new getid3_exception('Could not open &quot;'.$filename.'&quot; ('.implode('; ', $errormessagelist).')');
			}

			$this-&gt;info['filesize'] = (!is_null($filesize) ? $filesize : filesize($filename));
			// set redundant parameters - might be needed in some include file
			// filenames / filepaths in getID3 are always expressed with forward slashes (unix-style) for both Windows and other to try and minimize confusion
			$filename = str_replace('\\', '/', $filename);
			$this-&gt;info['filepath']     = str_replace('\\', '/', realpath(dirname($filename)));
			$this-&gt;info['filename']     = getid3_lib::mb_basename($filename);
			$this-&gt;info['filenamepath'] = $this-&gt;info['filepath'].'/'.$this-&gt;info['filename'];

			// set more parameters
			$this-&gt;info['avdataoffset']        = 0;
			$this-&gt;info['avdataend']           = $this-&gt;info['filesize'];
			$this-&gt;info['fileformat']          = '';                // filled in later
			$this-&gt;info['audio']['dataformat'] = '';                // filled in later, unset if not used
			$this-&gt;info['video']['dataformat'] = '';                // filled in later, unset if not used
			$this-&gt;info['tags']                = array();           // filled in later, unset if not used
			$this-&gt;info['error']               = array();           // filled in later, unset if not used
			$this-&gt;info['warning']             = array();           // filled in later, unset if not used
			$this-&gt;info['comments']            = array();           // filled in later, unset if not used
			$this-&gt;info['encoding']            = $this-&gt;encoding;   // required by id3v2 and iso modules - can be unset at the end if desired

			// option_max_2gb_check
			if ($this-&gt;option_max_2gb_check) {
				// PHP (32-bit all, and 64-bit Windows) doesn't support integers larger than 2^31 (~2GB)
				// filesize() simply returns (filesize % (pow(2, 32)), no matter the actual filesize
				// ftell() returns 0 if seeking to the end is beyond the range of unsigned integer
				$fseek = fseek($this-&gt;fp, 0, SEEK_END);
				if (($fseek &lt; 0) || (($this-&gt;info['filesize'] != 0) &amp;&amp; (ftell($this-&gt;fp) == 0)) ||
					($this-&gt;info['filesize'] &lt; 0) ||
					(ftell($this-&gt;fp) &lt; 0)) {
						$real_filesize = getid3_lib::getFileSizeSyscall($this-&gt;info['filenamepath']);

						if ($real_filesize === false) {
							unset($this-&gt;info['filesize']);
							fclose($this-&gt;fp);
							throw new getid3_exception('Unable to determine actual filesize. File is most likely larger than '.round(PHP_INT_MAX / 1073741824).'GB and is not supported by PHP.');
						} elseif (getid3_lib::intValueSupported($real_filesize)) {
							unset($this-&gt;info['filesize']);
							fclose($this-&gt;fp);
							throw new getid3_exception('PHP seems to think the file is larger than '.round(PHP_INT_MAX / 1073741824).'GB, but filesystem reports it as '.number_format($real_filesize, 3).'GB, please report to info@getid3.org');
						}
						$this-&gt;info['filesize'] = $real_filesize;
						$this-&gt;warning('File is larger than '.round(PHP_INT_MAX / 1073741824).'GB (filesystem reports it as '.number_format($real_filesize, 3).'GB) and is not properly supported by PHP.');
				}
			}

			return true;

		} catch (Exception $e) {
			$this-&gt;error($e-&gt;getMessage());
		}
		return false;
	}

	// public: analyze file
	public function analyze($filename, $filesize=null, $original_filename='') {
		try {
			if (!$this-&gt;openfile($filename, $filesize)) {
				return $this-&gt;info;
			}

			// Handle tags
			foreach (array('id3v2'=&gt;'id3v2', 'id3v1'=&gt;'id3v1', 'apetag'=&gt;'ape', 'lyrics3'=&gt;'lyrics3') as $tag_name =&gt; $tag_key) {
				$option_tag = 'option_tag_'.$tag_name;
				if ($this-&gt;$option_tag) {
					$this-&gt;include_module('tag.'.$tag_name);
					try {
						$tag_class = 'getid3_'.$tag_name;
						$tag = new $tag_class($this);
						$tag-&gt;Analyze();
					}
					catch (getid3_exception $e) {
						throw $e;
					}
				}
			}
			if (isset($this-&gt;info['id3v2']['tag_offset_start'])) {
				$this-&gt;info['avdataoffset'] = max($this-&gt;info['avdataoffset'], $this-&gt;info['id3v2']['tag_offset_end']);
			}
			foreach (array('id3v1'=&gt;'id3v1', 'apetag'=&gt;'ape', 'lyrics3'=&gt;'lyrics3') as $tag_name =&gt; $tag_key) {
				if (isset($this-&gt;info[$tag_key]['tag_offset_start'])) {
					$this-&gt;info['avdataend'] = min($this-&gt;info['avdataend'], $this-&gt;info[$tag_key]['tag_offset_start']);
				}
			}

			// ID3v2 detection (NOT parsing), even if ($this-&gt;option_tag_id3v2 == false) done to make fileformat easier
			if (!$this-&gt;option_tag_id3v2) {
				fseek($this-&gt;fp, 0);
				$header = fread($this-&gt;fp, 10);
				if ((substr($header, 0, 3) == 'ID3') &amp;&amp; (strlen($header) == 10)) {
					$this-&gt;info['id3v2']['header']        = true;
					$this-&gt;info['id3v2']['majorversion']  = ord($header[3]);
					$this-&gt;info['id3v2']['minorversion']  = ord($header[4]);
					$this-&gt;info['avdataoffset']          += getid3_lib::BigEndian2Int(substr($header, 6, 4), 1) + 10; // length of ID3v2 tag in 10-byte header doesn't include 10-byte header length
				}
			}

			// read 32 kb file data
			fseek($this-&gt;fp, $this-&gt;info['avdataoffset']);
			$formattest = fread($this-&gt;fp, 32774);

			// determine format
			$determined_format = $this-&gt;GetFileFormat($formattest, ($original_filename ? $original_filename : $filename));

			// unable to determine file format
			if (!$determined_format) {
				fclose($this-&gt;fp);
				return $this-&gt;error('unable to determine file format');
			}

			// check for illegal ID3 tags
			if (isset($determined_format['fail_id3']) &amp;&amp; (in_array('id3v1', $this-&gt;info['tags']) || in_array('id3v2', $this-&gt;info['tags']))) {
				if ($determined_format['fail_id3'] === 'ERROR') {
					fclose($this-&gt;fp);
					return $this-&gt;error('ID3 tags not allowed on this file type.');
				} elseif ($determined_format['fail_id3'] === 'WARNING') {
					$this-&gt;warning('ID3 tags not allowed on this file type.');
				}
			}

			// check for illegal APE tags
			if (isset($determined_format['fail_ape']) &amp;&amp; in_array('ape', $this-&gt;info['tags'])) {
				if ($determined_format['fail_ape'] === 'ERROR') {
					fclose($this-&gt;fp);
					return $this-&gt;error('APE tags not allowed on this file type.');
				} elseif ($determined_format['fail_ape'] === 'WARNING') {
					$this-&gt;warning('APE tags not allowed on this file type.');
				}
			}

			// set mime type
			$this-&gt;info['mime_type'] = $determined_format['mime_type'];

			// supported format signature pattern detected, but module deleted
			if (!file_exists(GETID3_INCLUDEPATH.$determined_format['include'])) {
				fclose($this-&gt;fp);
				return $this-&gt;error('Format not supported, module &quot;'.$determined_format['include'].'&quot; was removed.');
			}

			// module requires mb_convert_encoding/iconv support
			// Check encoding/iconv support
			if (!empty($determined_format['iconv_req']) &amp;&amp; !function_exists('mb_convert_encoding') &amp;&amp; !function_exists('iconv') &amp;&amp; !in_array($this-&gt;encoding, array('ISO-8859-1', 'UTF-8', 'UTF-16LE', 'UTF-16BE', 'UTF-16'))) {
				$errormessage = 'mb_convert_encoding() or iconv() support is required for this module ('.$determined_format['include'].') for encodings other than ISO-8859-1, UTF-8, UTF-16LE, UTF16-BE, UTF-16. ';
				if (GETID3_OS_ISWINDOWS) {
					$errormessage .= 'PHP does not have mb_convert_encoding() or iconv() support. Please enable php_mbstring.dll / php_iconv.dll in php.ini, and copy php_mbstring.dll / iconv.dll from c:/php/dlls to c:/windows/system32';
				} else {
					$errormessage .= 'PHP is not compiled with mb_convert_encoding() or iconv() support. Please recompile with the --enable-mbstring / --with-iconv switch';
				}
				return $this-&gt;error($errormessage);
			}

			// include module
			include_once(GETID3_INCLUDEPATH.$determined_format['include']);

			// instantiate module class
			$class_name = 'getid3_'.$determined_format['module'];
			if (!class_exists($class_name)) {
				return $this-&gt;error('Format not supported, module &quot;'.$determined_format['include'].'&quot; is corrupt.');
			}
			$class = new $class_name($this);
			$class-&gt;Analyze();
			unset($class);

			// close file
			fclose($this-&gt;fp);

			// process all tags - copy to 'tags' and convert charsets
			if ($this-&gt;option_tags_process) {
				$this-&gt;HandleAllTags();
			}

			// perform more calculations
			if ($this-&gt;option_extra_info) {
				$this-&gt;ChannelsBitratePlaytimeCalculations();
				$this-&gt;CalculateCompressionRatioVideo();
				$this-&gt;CalculateCompressionRatioAudio();
				$this-&gt;CalculateReplayGain();
				$this-&gt;ProcessAudioStreams();
			}

			// get the MD5 sum of the audio/video portion of the file - without ID3/APE/Lyrics3/etc header/footer tags
			if ($this-&gt;option_md5_data) {
				// do not calc md5_data if md5_data_source is present - set by flac only - future MPC/SV8 too
				if (!$this-&gt;option_md5_data_source || empty($this-&gt;info['md5_data_source'])) {
					$this-&gt;getHashdata('md5');
				}
			}

			// get the SHA1 sum of the audio/video portion of the file - without ID3/APE/Lyrics3/etc header/footer tags
			if ($this-&gt;option_sha1_data) {
				$this-&gt;getHashdata('sha1');
			}

			// remove undesired keys
			$this-&gt;CleanUp();

		} catch (Exception $e) {
			$this-&gt;error('Caught exception: '.$e-&gt;getMessage());
		}

		// return info array
		return $this-&gt;info;
	}


	// private: error handling
	public function error($message) {
		$this-&gt;CleanUp();
		if (!isset($this-&gt;info['error'])) {
			$this-&gt;info['error'] = array();
		}
		$this-&gt;info['error'][] = $message;
		return $this-&gt;info;
	}


	// private: warning handling
	public function warning($message) {
		$this-&gt;info['warning'][] = $message;
		return true;
	}


	// private: CleanUp
	private function CleanUp() {

		// remove possible empty keys
		$AVpossibleEmptyKeys = array('dataformat', 'bits_per_sample', 'encoder_options', 'streams', 'bitrate');
		foreach ($AVpossibleEmptyKeys as $dummy =&gt; $key) {
			if (empty($this-&gt;info['audio'][$key]) &amp;&amp; isset($this-&gt;info['audio'][$key])) {
				unset($this-&gt;info['audio'][$key]);
			}
			if (empty($this-&gt;info['video'][$key]) &amp;&amp; isset($this-&gt;info['video'][$key])) {
				unset($this-&gt;info['video'][$key]);
			}
		}

		// remove empty root keys
		if (!empty($this-&gt;info)) {
			foreach ($this-&gt;info as $key =&gt; $value) {
				if (empty($this-&gt;info[$key]) &amp;&amp; ($this-&gt;info[$key] !== 0) &amp;&amp; ($this-&gt;info[$key] !== '0')) {
					unset($this-&gt;info[$key]);
				}
			}
		}

		// remove meaningless entries from unknown-format files
		if (empty($this-&gt;info['fileformat'])) {
			if (isset($this-&gt;info['avdataoffset'])) {
				unset($this-&gt;info['avdataoffset']);
			}
			if (isset($this-&gt;info['avdataend'])) {
				unset($this-&gt;info['avdataend']);
			}
		}

		// remove possible duplicated identical entries
		if (!empty($this-&gt;info['error'])) {
			$this-&gt;info['error'] = array_values(array_unique($this-&gt;info['error']));
		}
		if (!empty($this-&gt;info['warning'])) {
			$this-&gt;info['warning'] = array_values(array_unique($this-&gt;info['warning']));
		}

		// remove &quot;global variable&quot; type keys
		unset($this-&gt;info['php_memory_limit']);

		return true;
	}


	// return array containing information about all supported formats
	public function GetFileFormatArray() {
		static $format_info = array();
		if (empty($format_info)) {
			$format_info = array(

				// Audio formats

				// AC-3   - audio      - Dolby AC-3 / Dolby Digital
				'ac3'  =&gt; array(
							'pattern'   =&gt; '^\\x0B\\x77',
							'group'     =&gt; 'audio',
							'module'    =&gt; 'ac3',
							'mime_type' =&gt; 'audio/ac3',
						),

				// AAC  - audio       - Advanced Audio Coding (AAC) - ADIF format
				'adif' =&gt; array(
							'pattern'   =&gt; '^ADIF',
							'group'     =&gt; 'audio',
							'module'    =&gt; 'aac',
							'mime_type' =&gt; 'application/octet-stream',
							'fail_ape'  =&gt; 'WARNING',
						),

/*
				// AA   - audio       - Audible Audiobook
				'aa'   =&gt; array(
							'pattern'   =&gt; '^.{4}\\x57\\x90\\x75\\x36',
							'group'     =&gt; 'audio',
							'module'    =&gt; 'aa',
							'mime_type' =&gt; 'audio/audible',
						),
*/
				// AAC  - audio       - Advanced Audio Coding (AAC) - ADTS format (very similar to MP3)
				'adts' =&gt; array(
							'pattern'   =&gt; '^\\xFF[\\xF0-\\xF1\\xF8-\\xF9]',
							'group'     =&gt; 'audio',
							'module'    =&gt; 'aac',
							'mime_type' =&gt; 'application/octet-stream',
							'fail_ape'  =&gt; 'WARNING',
						),


				// AU   - audio       - NeXT/Sun AUdio (AU)
				'au'   =&gt; array(
							'pattern'   =&gt; '^\\.snd',
							'group'     =&gt; 'audio',
							'module'    =&gt; 'au',
							'mime_type' =&gt; 'audio/basic',
						),

				// AMR  - audio       - Adaptive Multi Rate
				'amr'  =&gt; array(
							'pattern'   =&gt; '^\\x23\\x21AMR\\x0A', // #!AMR[0A]
							'group'     =&gt; 'audio',
							'module'    =&gt; 'amr',
							'mime_type' =&gt; 'audio/amr',
						),

				// AVR  - audio       - Audio Visual Research
				'avr'  =&gt; array(
							'pattern'   =&gt; '^2BIT',
							'group'     =&gt; 'audio',
							'module'    =&gt; 'avr',
							'mime_type' =&gt; 'application/octet-stream',
						),

				// BONK - audio       - Bonk v0.9+
				'bonk' =&gt; array(
							'pattern'   =&gt; '^\\x00(BONK|INFO|META| ID3)',
							'group'     =&gt; 'audio',
							'module'    =&gt; 'bonk',
							'mime_type' =&gt; 'audio/xmms-bonk',
						),

				// DSF  - audio       - Direct Stream Digital (DSD) Storage Facility files (DSF) - https://en.wikipedia.org/wiki/Direct_Stream_Digital
				'dsf'  =&gt; array(
							'pattern'   =&gt; '^DSD ',  // including trailing space: 44 53 44 20
							'group'     =&gt; 'audio',
							'module'    =&gt; 'dsf',
							'mime_type' =&gt; 'audio/dsd',
						),

				// DSS  - audio       - Digital Speech Standard
				'dss'  =&gt; array(
							'pattern'   =&gt; '^[\\x02-\\x06]ds[s2]',
							'group'     =&gt; 'audio',
							'module'    =&gt; 'dss',
							'mime_type' =&gt; 'application/octet-stream',
						),

				// DTS  - audio       - Dolby Theatre System
				'dts'  =&gt; array(
							'pattern'   =&gt; '^\\x7F\\xFE\\x80\\x01',
							'group'     =&gt; 'audio',
							'module'    =&gt; 'dts',
							'mime_type' =&gt; 'audio/dts',
						),

				// FLAC - audio       - Free Lossless Audio Codec
				'flac' =&gt; array(
							'pattern'   =&gt; '^fLaC',
							'group'     =&gt; 'audio',
							'module'    =&gt; 'flac',
							'mime_type' =&gt; 'audio/x-flac',
						),

				// LA   - audio       - Lossless Audio (LA)
				'la'   =&gt; array(
							'pattern'   =&gt; '^LA0[2-4]',
							'group'     =&gt; 'audio',
							'module'    =&gt; 'la',
							'mime_type' =&gt; 'application/octet-stream',
						),

				// LPAC - audio       - Lossless Predictive Audio Compression (LPAC)
				'lpac' =&gt; array(
							'pattern'   =&gt; '^LPAC',
							'group'     =&gt; 'audio',
							'module'    =&gt; 'lpac',
							'mime_type' =&gt; 'application/octet-stream',
						),

				// MIDI - audio       - MIDI (Musical Instrument Digital Interface)
				'midi' =&gt; array(
							'pattern'   =&gt; '^MThd',
							'group'     =&gt; 'audio',
							'module'    =&gt; 'midi',
							'mime_type' =&gt; 'audio/midi',
						),

				// MAC  - audio       - Monkey's Audio Compressor
				'mac'  =&gt; array(
							'pattern'   =&gt; '^MAC ',
							'group'     =&gt; 'audio',
							'module'    =&gt; 'monkey',
							'mime_type' =&gt; 'application/octet-stream',
						),

// has been known to produce false matches in random files (e.g. JPEGs), leave out until more precise matching available
//				// MOD  - audio       - MODule (assorted sub-formats)
//				'mod'  =&gt; array(
//							'pattern'   =&gt; '^.{1080}(M\\.K\\.|M!K!|FLT4|FLT8|[5-9]CHN|[1-3][0-9]CH)',
//							'group'     =&gt; 'audio',
//							'module'    =&gt; 'mod',
//							'option'    =&gt; 'mod',
//							'mime_type' =&gt; 'audio/mod',
//						),

				// MOD  - audio       - MODule (Impulse Tracker)
				'it'   =&gt; array(
							'pattern'   =&gt; '^IMPM',
							'group'     =&gt; 'audio',
							'module'    =&gt; 'mod',
							//'option'    =&gt; 'it',
							'mime_type' =&gt; 'audio/it',
						),

				// MOD  - audio       - MODule (eXtended Module, various sub-formats)
				'xm'   =&gt; array(
							'pattern'   =&gt; '^Extended Module',
							'group'     =&gt; 'audio',
							'module'    =&gt; 'mod',
							//'option'    =&gt; 'xm',
							'mime_type' =&gt; 'audio/xm',
						),

				// MOD  - audio       - MODule (ScreamTracker)
				's3m'  =&gt; array(
							'pattern'   =&gt; '^.{44}SCRM',
							'group'     =&gt; 'audio',
							'module'    =&gt; 'mod',
							//'option'    =&gt; 's3m',
							'mime_type' =&gt; 'audio/s3m',
						),

				// MPC  - audio       - Musepack / MPEGplus
				'mpc'  =&gt; array(
							'pattern'   =&gt; '^(MPCK|MP\\+|[\\x00\\x01\\x10\\x11\\x40\\x41\\x50\\x51\\x80\\x81\\x90\\x91\\xC0\\xC1\\xD0\\xD1][\\x20-\\x37][\\x00\\x20\\x40\\x60\\x80\\xA0\\xC0\\xE0])',
							'group'     =&gt; 'audio',
							'module'    =&gt; 'mpc',
							'mime_type' =&gt; 'audio/x-musepack',
						),

				// MP3  - audio       - MPEG-audio Layer 3 (very similar to AAC-ADTS)
				'mp3'  =&gt; array(
							'pattern'   =&gt; '^\\xFF[\\xE2-\\xE7\\xF2-\\xF7\\xFA-\\xFF][\\x00-\\x0B\\x10-\\x1B\\x20-\\x2B\\x30-\\x3B\\x40-\\x4B\\x50-\\x5B\\x60-\\x6B\\x70-\\x7B\\x80-\\x8B\\x90-\\x9B\\xA0-\\xAB\\xB0-\\xBB\\xC0-\\xCB\\xD0-\\xDB\\xE0-\\xEB\\xF0-\\xFB]',
							'group'     =&gt; 'audio',
							'module'    =&gt; 'mp3',
							'mime_type' =&gt; 'audio/mpeg',
						),

				// OFR  - audio       - OptimFROG
				'ofr'  =&gt; array(
							'pattern'   =&gt; '^(\\*RIFF|OFR)',
							'group'     =&gt; 'audio',
							'module'    =&gt; 'optimfrog',
							'mime_type' =&gt; 'application/octet-stream',
						),

				// RKAU - audio       - RKive AUdio compressor
				'rkau' =&gt; array(
							'pattern'   =&gt; '^RKA',
							'group'     =&gt; 'audio',
							'module'    =&gt; 'rkau',
							'mime_type' =&gt; 'application/octet-stream',
						),

				// SHN  - audio       - Shorten
				'shn'  =&gt; array(
							'pattern'   =&gt; '^ajkg',
							'group'     =&gt; 'audio',
							'module'    =&gt; 'shorten',
							'mime_type' =&gt; 'audio/xmms-shn',
							'fail_id3'  =&gt; 'ERROR',
							'fail_ape'  =&gt; 'ERROR',
						),

				// TTA  - audio       - TTA Lossless Audio Compressor (http://tta.corecodec.org)
				'tta'  =&gt; array(
							'pattern'   =&gt; '^TTA',  // could also be '^TTA(\\x01|\\x02|\\x03|2|1)'
							'group'     =&gt; 'audio',
							'module'    =&gt; 'tta',
							'mime_type' =&gt; 'application/octet-stream',
						),

				// VOC  - audio       - Creative Voice (VOC)
				'voc'  =&gt; array(
							'pattern'   =&gt; '^Creative Voice File',
							'group'     =&gt; 'audio',
							'module'    =&gt; 'voc',
							'mime_type' =&gt; 'audio/voc',
						),

				// VQF  - audio       - transform-domain weighted interleave Vector Quantization Format (VQF)
				'vqf'  =&gt; array(
							'pattern'   =&gt; '^TWIN',
							'group'     =&gt; 'audio',
							'module'    =&gt; 'vqf',
							'mime_type' =&gt; 'application/octet-stream',
						),

				// WV  - audio        - WavPack (v4.0+)
				'wv'   =&gt; array(
							'pattern'   =&gt; '^wvpk',
							'group'     =&gt; 'audio',
							'module'    =&gt; 'wavpack',
							'mime_type' =&gt; 'application/octet-stream',
						),


				// Audio-Video formats

				// ASF  - audio/video - Advanced Streaming Format, Windows Media Video, Windows Media Audio
				'asf'  =&gt; array(
							'pattern'   =&gt; '^\\x30\\x26\\xB2\\x75\\x8E\\x66\\xCF\\x11\\xA6\\xD9\\x00\\xAA\\x00\\x62\\xCE\\x6C',
							'group'     =&gt; 'audio-video',
							'module'    =&gt; 'asf',
							'mime_type' =&gt; 'video/x-ms-asf',
							'iconv_req' =&gt; false,
						),

				// BINK - audio/video - Bink / Smacker
				'bink' =&gt; array(
							'pattern'   =&gt; '^(BIK|SMK)',
							'group'     =&gt; 'audio-video',
							'module'    =&gt; 'bink',
							'mime_type' =&gt; 'application/octet-stream',
						),

				// FLV  - audio/video - FLash Video
				'flv' =&gt; array(
							'pattern'   =&gt; '^FLV[\\x01]',
							'group'     =&gt; 'audio-video',
							'module'    =&gt; 'flv',
							'mime_type' =&gt; 'video/x-flv',
						),

				// MKAV - audio/video - Mastroka
				'matroska' =&gt; array(
							'pattern'   =&gt; '^\\x1A\\x45\\xDF\\xA3',
							'group'     =&gt; 'audio-video',
							'module'    =&gt; 'matroska',
							'mime_type' =&gt; 'video/x-matroska', // may also be audio/x-matroska
						),

				// MPEG - audio/video - MPEG (Moving Pictures Experts Group)
				'mpeg' =&gt; array(
							'pattern'   =&gt; '^\\x00\\x00\\x01[\\xB3\\xBA]',
							'group'     =&gt; 'audio-video',
							'module'    =&gt; 'mpeg',
							'mime_type' =&gt; 'video/mpeg',
						),

				// NSV  - audio/video - Nullsoft Streaming Video (NSV)
				'nsv'  =&gt; array(
							'pattern'   =&gt; '^NSV[sf]',
							'group'     =&gt; 'audio-video',
							'module'    =&gt; 'nsv',
							'mime_type' =&gt; 'application/octet-stream',
						),

				// Ogg  - audio/video - Ogg (Ogg-Vorbis, Ogg-FLAC, Speex, Ogg-Theora(*), Ogg-Tarkin(*))
				'ogg'  =&gt; array(
							'pattern'   =&gt; '^OggS',
							'group'     =&gt; 'audio',
							'module'    =&gt; 'ogg',
							'mime_type' =&gt; 'application/ogg',
							'fail_id3'  =&gt; 'WARNING',
							'fail_ape'  =&gt; 'WARNING',
						),

				// QT   - audio/video - Quicktime
				'quicktime' =&gt; array(
							'pattern'   =&gt; '^.{4}(cmov|free|ftyp|mdat|moov|pnot|skip|wide)',
							'group'     =&gt; 'audio-video',
							'module'    =&gt; 'quicktime',
							'mime_type' =&gt; 'video/quicktime',
						),

				// RIFF - audio/video - Resource Interchange File Format (RIFF) / WAV / AVI / CD-audio / SDSS = renamed variant used by SmartSound QuickTracks (www.smartsound.com) / FORM = Audio Interchange File Format (AIFF)
				'riff' =&gt; array(
							'pattern'   =&gt; '^(RIFF|SDSS|FORM)',
							'group'     =&gt; 'audio-video',
							'module'    =&gt; 'riff',
							'mime_type' =&gt; 'audio/x-wav',
							'fail_ape'  =&gt; 'WARNING',
						),

				// Real - audio/video - RealAudio, RealVideo
				'real' =&gt; array(
							'pattern'   =&gt; '^\\.(RMF|ra)',
							'group'     =&gt; 'audio-video',
							'module'    =&gt; 'real',
							'mime_type' =&gt; 'audio/x-realaudio',
						),

				// SWF - audio/video - ShockWave Flash
				'swf' =&gt; array(
							'pattern'   =&gt; '^(F|C)WS',
							'group'     =&gt; 'audio-video',
							'module'    =&gt; 'swf',
							'mime_type' =&gt; 'application/x-shockwave-flash',
						),

				// TS - audio/video - MPEG-2 Transport Stream
				'ts' =&gt; array(
							'pattern'   =&gt; '^(\\x47.{187}){10,}', // packets are 188 bytes long and start with 0x47 &quot;G&quot;.  Check for at least 10 packets matching this pattern
							'group'     =&gt; 'audio-video',
							'module'    =&gt; 'ts',
							'mime_type' =&gt; 'video/MP2T',
						),


				// Still-Image formats

				// BMP  - still image - Bitmap (Windows, OS/2; uncompressed, RLE8, RLE4)
				'bmp'  =&gt; array(
							'pattern'   =&gt; '^BM',
							'group'     =&gt; 'graphic',
							'module'    =&gt; 'bmp',
							'mime_type' =&gt; 'image/bmp',
							'fail_id3'  =&gt; 'ERROR',
							'fail_ape'  =&gt; 'ERROR',
						),

				// GIF  - still image - Graphics Interchange Format
				'gif'  =&gt; array(
							'pattern'   =&gt; '^GIF',
							'group'     =&gt; 'graphic',
							'module'    =&gt; 'gif',
							'mime_type' =&gt; 'image/gif',
							'fail_id3'  =&gt; 'ERROR',
							'fail_ape'  =&gt; 'ERROR',
						),

				// JPEG - still image - Joint Photographic Experts Group (JPEG)
				'jpg'  =&gt; array(
							'pattern'   =&gt; '^\\xFF\\xD8\\xFF',
							'group'     =&gt; 'graphic',
							'module'    =&gt; 'jpg',
							'mime_type' =&gt; 'image/jpeg',
							'fail_id3'  =&gt; 'ERROR',
							'fail_ape'  =&gt; 'ERROR',
						),

				// PCD  - still image - Kodak Photo CD
				'pcd'  =&gt; array(
							'pattern'   =&gt; '^.{2048}PCD_IPI\\x00',
							'group'     =&gt; 'graphic',
							'module'    =&gt; 'pcd',
							'mime_type' =&gt; 'image/x-photo-cd',
							'fail_id3'  =&gt; 'ERROR',
							'fail_ape'  =&gt; 'ERROR',
						),


				// PNG  - still image - Portable Network Graphics (PNG)
				'png'  =&gt; array(
							'pattern'   =&gt; '^\\x89\\x50\\x4E\\x47\\x0D\\x0A\\x1A\\x0A',
							'group'     =&gt; 'graphic',
							'module'    =&gt; 'png',
							'mime_type' =&gt; 'image/png',
							'fail_id3'  =&gt; 'ERROR',
							'fail_ape'  =&gt; 'ERROR',
						),


				// SVG  - still image - Scalable Vector Graphics (SVG)
				'svg'  =&gt; array(
							'pattern'   =&gt; '(&lt;!DOCTYPE svg PUBLIC |xmlns=&quot;http://www\\.w3\\.org/2000/svg&quot;)',
							'group'     =&gt; 'graphic',
							'module'    =&gt; 'svg',
							'mime_type' =&gt; 'image/svg+xml',
							'fail_id3'  =&gt; 'ERROR',
							'fail_ape'  =&gt; 'ERROR',
						),


				// TIFF - still image - Tagged Information File Format (TIFF)
				'tiff' =&gt; array(
							'pattern'   =&gt; '^(II\\x2A\\x00|MM\\x00\\x2A)',
							'group'     =&gt; 'graphic',
							'module'    =&gt; 'tiff',
							'mime_type' =&gt; 'image/tiff',
							'fail_id3'  =&gt; 'ERROR',
							'fail_ape'  =&gt; 'ERROR',
						),


				// EFAX - still image - eFax (TIFF derivative)
				'efax'  =&gt; array(
							'pattern'   =&gt; '^\\xDC\\xFE',
							'group'     =&gt; 'graphic',
							'module'    =&gt; 'efax',
							'mime_type' =&gt; 'image/efax',
							'fail_id3'  =&gt; 'ERROR',
							'fail_ape'  =&gt; 'ERROR',
						),


				// Data formats

				// ISO  - data        - International Standards Organization (ISO) CD-ROM Image
				'iso'  =&gt; array(
							'pattern'   =&gt; '^.{32769}CD001',
							'group'     =&gt; 'misc',
							'module'    =&gt; 'iso',
							'mime_type' =&gt; 'application/octet-stream',
							'fail_id3'  =&gt; 'ERROR',
							'fail_ape'  =&gt; 'ERROR',
							'iconv_req' =&gt; false,
						),

				// RAR  - data        - RAR compressed data
				'rar'  =&gt; array(
							'pattern'   =&gt; '^Rar\\!',
							'group'     =&gt; 'archive',
							'module'    =&gt; 'rar',
							'mime_type' =&gt; 'application/octet-stream',
							'fail_id3'  =&gt; 'ERROR',
							'fail_ape'  =&gt; 'ERROR',
						),

				// SZIP - audio/data  - SZIP compressed data
				'szip' =&gt; array(
							'pattern'   =&gt; '^SZ\\x0A\\x04',
							'group'     =&gt; 'archive',
							'module'    =&gt; 'szip',
							'mime_type' =&gt; 'application/octet-stream',
							'fail_id3'  =&gt; 'ERROR',
							'fail_ape'  =&gt; 'ERROR',
						),

				// TAR  - data        - TAR compressed data
				'tar'  =&gt; array(
							'pattern'   =&gt; '^.{100}[0-9\\x20]{7}\\x00[0-9\\x20]{7}\\x00[0-9\\x20]{7}\\x00[0-9\\x20\\x00]{12}[0-9\\x20\\x00]{12}',
							'group'     =&gt; 'archive',
							'module'    =&gt; 'tar',
							'mime_type' =&gt; 'application/x-tar',
							'fail_id3'  =&gt; 'ERROR',
							'fail_ape'  =&gt; 'ERROR',
						),

				// GZIP  - data        - GZIP compressed data
				'gz'  =&gt; array(
							'pattern'   =&gt; '^\\x1F\\x8B\\x08',
							'group'     =&gt; 'archive',
							'module'    =&gt; 'gzip',
							'mime_type' =&gt; 'application/x-gzip',
							'fail_id3'  =&gt; 'ERROR',
							'fail_ape'  =&gt; 'ERROR',
						),

				// ZIP  - data         - ZIP compressed data
				'zip'  =&gt; array(
							'pattern'   =&gt; '^PK\\x03\\x04',
							'group'     =&gt; 'archive',
							'module'    =&gt; 'zip',
							'mime_type' =&gt; 'application/zip',
							'fail_id3'  =&gt; 'ERROR',
							'fail_ape'  =&gt; 'ERROR',
						),


				// Misc other formats

				// PAR2 - data        - Parity Volume Set Specification 2.0
				'par2' =&gt; array (
							'pattern'   =&gt; '^PAR2\\x00PKT',
							'group'     =&gt; 'misc',
							'module'    =&gt; 'par2',
							'mime_type' =&gt; 'application/octet-stream',
							'fail_id3'  =&gt; 'ERROR',
							'fail_ape'  =&gt; 'ERROR',
						),

				// PDF  - data        - Portable Document Format
				'pdf'  =&gt; array(
							'pattern'   =&gt; '^\\x25PDF',
							'group'     =&gt; 'misc',
							'module'    =&gt; 'pdf',
							'mime_type' =&gt; 'application/pdf',
							'fail_id3'  =&gt; 'ERROR',
							'fail_ape'  =&gt; 'ERROR',
						),

				// MSOFFICE  - data   - ZIP compressed data
				'msoffice' =&gt; array(
							'pattern'   =&gt; '^\\xD0\\xCF\\x11\\xE0\\xA1\\xB1\\x1A\\xE1', // D0CF11E == DOCFILE == Microsoft Office Document
							'group'     =&gt; 'misc',
							'module'    =&gt; 'msoffice',
							'mime_type' =&gt; 'application/octet-stream',
							'fail_id3'  =&gt; 'ERROR',
							'fail_ape'  =&gt; 'ERROR',
						),

				 // CUE  - data       - CUEsheet (index to single-file disc images)
				 'cue' =&gt; array(
							'pattern'   =&gt; '', // empty pattern means cannot be automatically detected, will fall through all other formats and match based on filename and very basic file contents
							'group'     =&gt; 'misc',
							'module'    =&gt; 'cue',
							'mime_type' =&gt; 'application/octet-stream',
						   ),

			);
		}

		return $format_info;
	}


	public function GetFileFormat(&amp;$filedata, $filename='') {
		// this function will determine the format of a file based on usually
		// the first 2-4 bytes of the file (8 bytes for PNG, 16 bytes for JPG,
		// and in the case of ISO CD image, 6 bytes offset 32kb from the start
		// of the file).

		// Identify file format - loop through $format_info and detect with reg expr
		foreach ($this-&gt;GetFileFormatArray() as $format_name =&gt; $info) {
			// The /s switch on preg_match() forces preg_match() NOT to treat
			// newline (0x0A) characters as special chars but do a binary match
			if (!empty($info['pattern']) &amp;&amp; preg_match('#'.$info['pattern'].'#s', $filedata)) {
				$info['include'] = 'module.'.$info['group'].'.'.$info['module'].'.php';
				return $info;
			}
		}


		if (preg_match('#\\.mp[123a]$#i', $filename)) {
			// Too many mp3 encoders on the market put gabage in front of mpeg files
			// use assume format on these if format detection failed
			$GetFileFormatArray = $this-&gt;GetFileFormatArray();
			$info = $GetFileFormatArray['mp3'];
			$info['include'] = 'module.'.$info['group'].'.'.$info['module'].'.php';
			return $info;
		} elseif (preg_match('#\\.cue$#i', $filename) &amp;&amp; preg_match('#FILE &quot;[^&quot;]+&quot; (BINARY|MOTOROLA|AIFF|WAVE|MP3)#', $filedata)) {
			// there's not really a useful consistent &quot;magic&quot; at the beginning of .cue files to identify them
			// so until I think of something better, just go by filename if all other format checks fail
			// and verify there's at least one instance of &quot;TRACK xx AUDIO&quot; in the file
			$GetFileFormatArray = $this-&gt;GetFileFormatArray();
			$info = $GetFileFormatArray['cue'];
			$info['include']   = 'module.'.$info['group'].'.'.$info['module'].'.php';
			return $info;
		}

		return false;
	}


	// converts array to $encoding charset from $this-&gt;encoding
	public function CharConvert(&amp;$array, $encoding) {

		// identical encoding - end here
		if ($encoding == $this-&gt;encoding) {
			return;
		}

		// loop thru array
		foreach ($array as $key =&gt; $value) {

			// go recursive
			if (is_array($value)) {
				$this-&gt;CharConvert($array[$key], $encoding);
			}

			// convert string
			elseif (is_string($value)) {
				$array[$key] = trim(getid3_lib::iconv_fallback($encoding, $this-&gt;encoding, $value));
			}
		}
	}


	public function HandleAllTags() {

		// key name =&gt; array (tag name, character encoding)
		static $tags;
		if (empty($tags)) {
			$tags = array(
				'asf'       =&gt; array('asf'           , 'UTF-16LE'),
				'midi'      =&gt; array('midi'          , 'ISO-8859-1'),
				'nsv'       =&gt; array('nsv'           , 'ISO-8859-1'),
				'ogg'       =&gt; array('vorbiscomment' , 'UTF-8'),
				'png'       =&gt; array('png'           , 'UTF-8'),
				'tiff'      =&gt; array('tiff'          , 'ISO-8859-1'),
				'quicktime' =&gt; array('quicktime'     , 'UTF-8'),
				'real'      =&gt; array('real'          , 'ISO-8859-1'),
				'vqf'       =&gt; array('vqf'           , 'ISO-8859-1'),
				'zip'       =&gt; array('zip'           , 'ISO-8859-1'),
				'riff'      =&gt; array('riff'          , 'ISO-8859-1'),
				'lyrics3'   =&gt; array('lyrics3'       , 'ISO-8859-1'),
				'id3v1'     =&gt; array('id3v1'         , $this-&gt;encoding_id3v1),
				'id3v2'     =&gt; array('id3v2'         , 'UTF-8'), // not according to the specs (every frame can have a different encoding), but getID3() force-converts all encodings to UTF-8
				'ape'       =&gt; array('ape'           , 'UTF-8'),
				'cue'       =&gt; array('cue'           , 'ISO-8859-1'),
				'matroska'  =&gt; array('matroska'      , 'UTF-8'),
				'flac'      =&gt; array('vorbiscomment' , 'UTF-8'),
				'divxtag'   =&gt; array('divx'          , 'ISO-8859-1'),
				'iptc'      =&gt; array('iptc'          , 'ISO-8859-1'),
			);
		}

		// loop through comments array
		foreach ($tags as $comment_name =&gt; $tagname_encoding_array) {
			list($tag_name, $encoding) = $tagname_encoding_array;

			// fill in default encoding type if not already present
			if (isset($this-&gt;info[$comment_name]) &amp;&amp; !isset($this-&gt;info[$comment_name]['encoding'])) {
				$this-&gt;info[$comment_name]['encoding'] = $encoding;
			}

			// copy comments if key name set
			if (!empty($this-&gt;info[$comment_name]['comments'])) {
				foreach ($this-&gt;info[$comment_name]['comments'] as $tag_key =&gt; $valuearray) {
					foreach ($valuearray as $key =&gt; $value) {
						if (is_string($value)) {
							$value = trim($value, &quot; \r\n\t&quot;); // do not trim nulls from $value!! Unicode characters will get mangled if trailing nulls are removed!
						}
						if ($value) {
							if (!is_numeric($key)) {
								$this-&gt;info['tags'][trim($tag_name)][trim($tag_key)][$key] = $value;
							} else {
								$this-&gt;info['tags'][trim($tag_name)][trim($tag_key)][]     = $value;
							}
						}
					}
					if ($tag_key == 'picture') {
						unset($this-&gt;info[$comment_name]['comments'][$tag_key]);
					}
				}

				if (!isset($this-&gt;info['tags'][$tag_name])) {
					// comments are set but contain nothing but empty strings, so skip
					continue;
				}

				$this-&gt;CharConvert($this-&gt;info['tags'][$tag_name], $this-&gt;info[$comment_name]['encoding']);           // only copy gets converted!

				if ($this-&gt;option_tags_html) {
					foreach ($this-&gt;info['tags'][$tag_name] as $tag_key =&gt; $valuearray) {
						$this-&gt;info['tags_html'][$tag_name][$tag_key] = getid3_lib::recursiveMultiByteCharString2HTML($valuearray, $this-&gt;info[$comment_name]['encoding']);
					}
				}

			}

		}

		// pictures can take up a lot of space, and we don't need multiple copies of them
		// let there be a single copy in [comments][picture], and not elsewhere
		if (!empty($this-&gt;info['tags'])) {
			$unset_keys = array('tags', 'tags_html');
			foreach ($this-&gt;info['tags'] as $tagtype =&gt; $tagarray) {
				foreach ($tagarray as $tagname =&gt; $tagdata) {
					if ($tagname == 'picture') {
						foreach ($tagdata as $key =&gt; $tagarray) {
							$this-&gt;info['comments']['picture'][] = $tagarray;
							if (isset($tagarray['data']) &amp;&amp; isset($tagarray['image_mime'])) {
								if (isset($this-&gt;info['tags'][$tagtype][$tagname][$key])) {
									unset($this-&gt;info['tags'][$tagtype][$tagname][$key]);
								}
								if (isset($this-&gt;info['tags_html'][$tagtype][$tagname][$key])) {
									unset($this-&gt;info['tags_html'][$tagtype][$tagname][$key]);
								}
							}
						}
					}
				}
				foreach ($unset_keys as $unset_key) {
					// remove possible empty keys from (e.g. [tags][id3v2][picture])
					if (empty($this-&gt;info[$unset_key][$tagtype]['picture'])) {
						unset($this-&gt;info[$unset_key][$tagtype]['picture']);
					}
					if (empty($this-&gt;info[$unset_key][$tagtype])) {
						unset($this-&gt;info[$unset_key][$tagtype]);
					}
					if (empty($this-&gt;info[$unset_key])) {
						unset($this-&gt;info[$unset_key]);
					}
				}
				// remove duplicate copy of picture data from (e.g. [id3v2][comments][picture])
				if (isset($this-&gt;info[$tagtype]['comments']['picture'])) {
					unset($this-&gt;info[$tagtype]['comments']['picture']);
				}
				if (empty($this-&gt;info[$tagtype]['comments'])) {
					unset($this-&gt;info[$tagtype]['comments']);
				}
				if (empty($this-&gt;info[$tagtype])) {
					unset($this-&gt;info[$tagtype]);
				}
			}
		}
		return true;
	}

	public function getHashdata($algorithm) {
		switch ($algorithm) {
			case 'md5':
			case 'sha1':
				break;

			default:
				return $this-&gt;error('bad algorithm &quot;'.$algorithm.'&quot; in getHashdata()');
				break;
		}

		if (!empty($this-&gt;info['fileformat']) &amp;&amp; !empty($this-&gt;info['dataformat']) &amp;&amp; ($this-&gt;info['fileformat'] == 'ogg') &amp;&amp; ($this-&gt;info['audio']['dataformat'] == 'vorbis')) {

			// We cannot get an identical md5_data value for Ogg files where the comments
			// span more than 1 Ogg page (compared to the same audio data with smaller
			// comments) using the normal getID3() method of MD5'ing the data between the
			// end of the comments and the end of the file (minus any trailing tags),
			// because the page sequence numbers of the pages that the audio data is on
			// do not match. Under normal circumstances, where comments are smaller than
			// the nominal 4-8kB page size, then this is not a problem, but if there are
			// very large comments, the only way around it is to strip off the comment
			// tags with vorbiscomment and MD5 that file.
			// This procedure must be applied to ALL Ogg files, not just the ones with
			// comments larger than 1 page, because the below method simply MD5's the
			// whole file with the comments stripped, not just the portion after the
			// comments block (which is the standard getID3() method.

			// The above-mentioned problem of comments spanning multiple pages and changing
			// page sequence numbers likely happens for OggSpeex and OggFLAC as well, but
			// currently vorbiscomment only works on OggVorbis files.

			if (preg_match('#(1|ON)#i', ini_get('safe_mode'))) {

				$this-&gt;warning('Failed making system call to vorbiscomment.exe - '.$algorithm.'_data is incorrect - error returned: PHP running in Safe Mode (backtick operator not available)');
				$this-&gt;info[$algorithm.'_data'] = false;

			} else {

				// Prevent user from aborting script
				$old_abort = ignore_user_abort(true);

				// Create empty file
				$empty = tempnam(GETID3_TEMP_DIR, 'getID3');
				touch($empty);

				// Use vorbiscomment to make temp file without comments
				$temp = tempnam(GETID3_TEMP_DIR, 'getID3');
				$file = $this-&gt;info['filenamepath'];

				if (GETID3_OS_ISWINDOWS) {

					if (file_exists(GETID3_HELPERAPPSDIR.'vorbiscomment.exe')) {

						$commandline = '&quot;'.GETID3_HELPERAPPSDIR.'vorbiscomment.exe&quot; -w -c &quot;'.$empty.'&quot; &quot;'.$file.'&quot; &quot;'.$temp.'&quot;';
						$VorbisCommentError = `$commandline`;

					} else {

						$VorbisCommentError = 'vorbiscomment.exe not found in '.GETID3_HELPERAPPSDIR;

					}

				} else {

					$commandline = 'vorbiscomment -w -c &quot;'.$empty.'&quot; &quot;'.$file.'&quot; &quot;'.$temp.'&quot; 2&gt;&amp;1';
					$commandline = 'vorbiscomment -w -c '.escapeshellarg($empty).' '.escapeshellarg($file).' '.escapeshellarg($temp).' 2&gt;&amp;1';
					$VorbisCommentError = `$commandline`;

				}

				if (!empty($VorbisCommentError)) {

					$this-&gt;warning('Failed making system call to vorbiscomment(.exe) - '.$algorithm.'_data will be incorrect. If vorbiscomment is unavailable, please download from http://www.vorbis.com/download.psp and put in the getID3() directory. Error returned: '.$VorbisCommentError);
					$this-&gt;info[$algorithm.'_data'] = false;

				} else {

					// Get hash of newly created file
					switch ($algorithm) {
						case 'md5':
							$this-&gt;info[$algorithm.'_data'] = md5_file($temp);
							break;

						case 'sha1':
							$this-&gt;info[$algorithm.'_data'] = sha1_file($temp);
							break;
					}
				}

				// Clean up
				unlink($empty);
				unlink($temp);

				// Reset abort setting
				ignore_user_abort($old_abort);

			}

		} else {

			if (!empty($this-&gt;info['avdataoffset']) || (isset($this-&gt;info['avdataend']) &amp;&amp; ($this-&gt;info['avdataend'] &lt; $this-&gt;info['filesize']))) {

				// get hash from part of file
				$this-&gt;info[$algorithm.'_data'] = getid3_lib::hash_data($this-&gt;info['filenamepath'], $this-&gt;info['avdataoffset'], $this-&gt;info['avdataend'], $algorithm);

			} else {

				// get hash from whole file
				switch ($algorithm) {
					case 'md5':
						$this-&gt;info[$algorithm.'_data'] = md5_file($this-&gt;info['filenamepath']);
						break;

					case 'sha1':
						$this-&gt;info[$algorithm.'_data'] = sha1_file($this-&gt;info['filenamepath']);
						break;
				}
			}

		}
		return true;
	}


	public function ChannelsBitratePlaytimeCalculations() {

		// set channelmode on audio
		if (!empty($this-&gt;info['audio']['channelmode']) || !isset($this-&gt;info['audio']['channels'])) {
			// ignore
		} elseif ($this-&gt;info['audio']['channels'] == 1) {
			$this-&gt;info['audio']['channelmode'] = 'mono';
		} elseif ($this-&gt;info['audio']['channels'] == 2) {
			$this-&gt;info['audio']['channelmode'] = 'stereo';
		}

		// Calculate combined bitrate - audio + video
		$CombinedBitrate  = 0;
		$CombinedBitrate += (isset($this-&gt;info['audio']['bitrate']) ? $this-&gt;info['audio']['bitrate'] : 0);
		$CombinedBitrate += (isset($this-&gt;info['video']['bitrate']) ? $this-&gt;info['video']['bitrate'] : 0);
		if (($CombinedBitrate &gt; 0) &amp;&amp; empty($this-&gt;info['bitrate'])) {
			$this-&gt;info['bitrate'] = $CombinedBitrate;
		}
		//if ((isset($this-&gt;info['video']) &amp;&amp; !isset($this-&gt;info['video']['bitrate'])) || (isset($this-&gt;info['audio']) &amp;&amp; !isset($this-&gt;info['audio']['bitrate']))) {
		//	// for example, VBR MPEG video files cannot determine video bitrate:
		//	// should not set overall bitrate and playtime from audio bitrate only
		//	unset($this-&gt;info['bitrate']);
		//}

		// video bitrate undetermined, but calculable
		if (isset($this-&gt;info['video']['dataformat']) &amp;&amp; $this-&gt;info['video']['dataformat'] &amp;&amp; (!isset($this-&gt;info['video']['bitrate']) || ($this-&gt;info['video']['bitrate'] == 0))) {
			// if video bitrate not set
			if (isset($this-&gt;info['audio']['bitrate']) &amp;&amp; ($this-&gt;info['audio']['bitrate'] &gt; 0) &amp;&amp; ($this-&gt;info['audio']['bitrate'] == $this-&gt;info['bitrate'])) {
				// AND if audio bitrate is set to same as overall bitrate
				if (isset($this-&gt;info['playtime_seconds']) &amp;&amp; ($this-&gt;info['playtime_seconds'] &gt; 0)) {
					// AND if playtime is set
					if (isset($this-&gt;info['avdataend']) &amp;&amp; isset($this-&gt;info['avdataoffset'])) {
						// AND if AV data offset start/end is known
						// THEN we can calculate the video bitrate
						$this-&gt;info['bitrate'] = round((($this-&gt;info['avdataend'] - $this-&gt;info['avdataoffset']) * 8) / $this-&gt;info['playtime_seconds']);
						$this-&gt;info['video']['bitrate'] = $this-&gt;info['bitrate'] - $this-&gt;info['audio']['bitrate'];
					}
				}
			}
		}

		if ((!isset($this-&gt;info['playtime_seconds']) || ($this-&gt;info['playtime_seconds'] &lt;= 0)) &amp;&amp; !empty($this-&gt;info['bitrate'])) {
			$this-&gt;info['playtime_seconds'] = (($this-&gt;info['avdataend'] - $this-&gt;info['avdataoffset']) * 8) / $this-&gt;info['bitrate'];
		}

		if (!isset($this-&gt;info['bitrate']) &amp;&amp; !empty($this-&gt;info['playtime_seconds'])) {
			$this-&gt;info['bitrate'] = (($this-&gt;info['avdataend'] - $this-&gt;info['avdataoffset']) * 8) / $this-&gt;info['playtime_seconds'];
		}
		if (isset($this-&gt;info['bitrate']) &amp;&amp; empty($this-&gt;info['audio']['bitrate']) &amp;&amp; empty($this-&gt;info['video']['bitrate'])) {
			if (isset($this-&gt;info['audio']['dataformat']) &amp;&amp; empty($this-&gt;info['video']['resolution_x'])) {
				// audio only
				$this-&gt;info['audio']['bitrate'] = $this-&gt;info['bitrate'];
			} elseif (isset($this-&gt;info['video']['resolution_x']) &amp;&amp; empty($this-&gt;info['audio']['dataformat'])) {
				// video only
				$this-&gt;info['video']['bitrate'] = $this-&gt;info['bitrate'];
			}
		}

		// Set playtime string
		if (!empty($this-&gt;info['playtime_seconds']) &amp;&amp; empty($this-&gt;info['playtime_string'])) {
			$this-&gt;info['playtime_string'] = getid3_lib::PlaytimeString($this-&gt;info['playtime_seconds']);
		}
	}


	public function CalculateCompressionRatioVideo() {
		if (empty($this-&gt;info['video'])) {
			return false;
		}
		if (empty($this-&gt;info['video']['resolution_x']) || empty($this-&gt;info['video']['resolution_y'])) {
			return false;
		}
		if (empty($this-&gt;info['video']['bits_per_sample'])) {
			return false;
		}

		switch ($this-&gt;info['video']['dataformat']) {
			case 'bmp':
			case 'gif':
			case 'jpeg':
			case 'jpg':
			case 'png':
			case 'tiff':
				$FrameRate = 1;
				$PlaytimeSeconds = 1;
				$BitrateCompressed = $this-&gt;info['filesize'] * 8;
				break;

			default:
				if (!empty($this-&gt;info['video']['frame_rate'])) {
					$FrameRate = $this-&gt;info['video']['frame_rate'];
				} else {
					return false;
				}
				if (!empty($this-&gt;info['playtime_seconds'])) {
					$PlaytimeSeconds = $this-&gt;info['playtime_seconds'];
				} else {
					return false;
				}
				if (!empty($this-&gt;info['video']['bitrate'])) {
					$BitrateCompressed = $this-&gt;info['video']['bitrate'];
				} else {
					return false;
				}
				break;
		}
		$BitrateUncompressed = $this-&gt;info['video']['resolution_x'] * $this-&gt;info['video']['resolution_y'] * $this-&gt;info['video']['bits_per_sample'] * $FrameRate;

		$this-&gt;info['video']['compression_ratio'] = $BitrateCompressed / $BitrateUncompressed;
		return true;
	}


	public function CalculateCompressionRatioAudio() {
		if (empty($this-&gt;info['audio']['bitrate']) || empty($this-&gt;info['audio']['channels']) || empty($this-&gt;info['audio']['sample_rate']) || !is_numeric($this-&gt;info['audio']['sample_rate'])) {
			return false;
		}
		$this-&gt;info['audio']['compression_ratio'] = $this-&gt;info['audio']['bitrate'] / ($this-&gt;info['audio']['channels'] * $this-&gt;info['audio']['sample_rate'] * (!empty($this-&gt;info['audio']['bits_per_sample']) ? $this-&gt;info['audio']['bits_per_sample'] : 16));

		if (!empty($this-&gt;info['audio']['streams'])) {
			foreach ($this-&gt;info['audio']['streams'] as $streamnumber =&gt; $streamdata) {
				if (!empty($streamdata['bitrate']) &amp;&amp; !empty($streamdata['channels']) &amp;&amp; !empty($streamdata['sample_rate'])) {
					$this-&gt;info['audio']['streams'][$streamnumber]['compression_ratio'] = $streamdata['bitrate'] / ($streamdata['channels'] * $streamdata['sample_rate'] * (!empty($streamdata['bits_per_sample']) ? $streamdata['bits_per_sample'] : 16));
				}
			}
		}
		return true;
	}


	public function CalculateReplayGain() {
		if (isset($this-&gt;info['replay_gain'])) {
			if (!isset($this-&gt;info['replay_gain']['reference_volume'])) {
				$this-&gt;info['replay_gain']['reference_volume'] = (double) 89.0;
			}
			if (isset($this-&gt;info['replay_gain']['track']['adjustment'])) {
				$this-&gt;info['replay_gain']['track']['volume'] = $this-&gt;info['replay_gain']['reference_volume'] - $this-&gt;info['replay_gain']['track']['adjustment'];
			}
			if (isset($this-&gt;info['replay_gain']['album']['adjustment'])) {
				$this-&gt;info['replay_gain']['album']['volume'] = $this-&gt;info['replay_gain']['reference_volume'] - $this-&gt;info['replay_gain']['album']['adjustment'];
			}

			if (isset($this-&gt;info['replay_gain']['track']['peak'])) {
				$this-&gt;info['replay_gain']['track']['max_noclip_gain'] = 0 - getid3_lib::RGADamplitude2dB($this-&gt;info['replay_gain']['track']['peak']);
			}
			if (isset($this-&gt;info['replay_gain']['album']['peak'])) {
				$this-&gt;info['replay_gain']['album']['max_noclip_gain'] = 0 - getid3_lib::RGADamplitude2dB($this-&gt;info['replay_gain']['album']['peak']);
			}
		}
		return true;
	}

	public function ProcessAudioStreams() {
		if (!empty($this-&gt;info['audio']['bitrate']) || !empty($this-&gt;info['audio']['channels']) || !empty($this-&gt;info['audio']['sample_rate'])) {
			if (!isset($this-&gt;info['audio']['streams'])) {
				foreach ($this-&gt;info['audio'] as $key =&gt; $value) {
					if ($key != 'streams') {
						$this-&gt;info['audio']['streams'][0][$key] = $value;
					}
				}
			}
		}
		return true;
	}

	public function getid3_tempnam() {
		return tempnam($this-&gt;tempdir, 'gI3');
	}

	public function include_module($name) {
		//if (!file_exists($this-&gt;include_path.'module.'.$name.'.php')) {
		if (!file_exists(GETID3_INCLUDEPATH.'module.'.$name.'.php')) {
			throw new getid3_exception('Required module.'.$name.'.php is missing.');
		}
		include_once(GETID3_INCLUDEPATH.'module.'.$name.'.php');
		return true;
	}

    public static function is_writable ($filename) {
        $ret = is_writable($filename);

        if (!$ret) {
            $perms = fileperms($filename);
            $ret = ($perms &amp; 0x0080) || ($perms &amp; 0x0010) || ($perms &amp; 0x0002);
        }

        return $ret;
    }

}


abstract class getid3_handler {

	/**
	* @var getID3
	*/
	protected $getid3;                       // pointer

	protected $data_string_flag     = false; // analyzing filepointer or string
	protected $data_string          = '';    // string to analyze
	protected $data_string_position = 0;     // seek position in string
	protected $data_string_length   = 0;     // string length

	private $dependency_to = null;


	public function __construct(getID3 $getid3, $call_module=null) {
		$this-&gt;getid3 = $getid3;

		if ($call_module) {
			$this-&gt;dependency_to = str_replace('getid3_', '', $call_module);
		}
	}


	// Analyze from file pointer
	abstract public function Analyze();


	// Analyze from string instead
	public function AnalyzeString($string) {
		// Enter string mode
		$this-&gt;setStringMode($string);

		// Save info
		$saved_avdataoffset = $this-&gt;getid3-&gt;info['avdataoffset'];
		$saved_avdataend    = $this-&gt;getid3-&gt;info['avdataend'];
		$saved_filesize     = (isset($this-&gt;getid3-&gt;info['filesize']) ? $this-&gt;getid3-&gt;info['filesize'] : null); // may be not set if called as dependency without openfile() call

		// Reset some info
		$this-&gt;getid3-&gt;info['avdataoffset'] = 0;
		$this-&gt;getid3-&gt;info['avdataend']    = $this-&gt;getid3-&gt;info['filesize'] = $this-&gt;data_string_length;

		// Analyze
		$this-&gt;Analyze();

		// Restore some info
		$this-&gt;getid3-&gt;info['avdataoffset'] = $saved_avdataoffset;
		$this-&gt;getid3-&gt;info['avdataend']    = $saved_avdataend;
		$this-&gt;getid3-&gt;info['filesize']     = $saved_filesize;

		// Exit string mode
		$this-&gt;data_string_flag = false;
	}

	public function setStringMode($string) {
		$this-&gt;data_string_flag   = true;
		$this-&gt;data_string        = $string;
		$this-&gt;data_string_length = strlen($string);
	}

	protected function ftell() {
		if ($this-&gt;data_string_flag) {
			return $this-&gt;data_string_position;
		}
		return ftell($this-&gt;getid3-&gt;fp);
	}

	protected function fread($bytes) {
		if ($this-&gt;data_string_flag) {
			$this-&gt;data_string_position += $bytes;
			return substr($this-&gt;data_string, $this-&gt;data_string_position - $bytes, $bytes);
		}
		$pos = $this-&gt;ftell() + $bytes;
		if (!getid3_lib::intValueSupported($pos)) {
			throw new getid3_exception('cannot fread('.$bytes.' from '.$this-&gt;ftell().') because beyond PHP filesystem limit', 10);
		}

		//return fread($this-&gt;getid3-&gt;fp, $bytes);
		/*
		* http://www.getid3.org/phpBB3/viewtopic.php?t=1930
		* &quot;I found out that the root cause for the problem was how getID3 uses the PHP system function fread().
		* It seems to assume that fread() would always return as many bytes as were requested.
		* However, according the PHP manual (http://php.net/manual/en/function.fread.php), this is the case only with regular local files, but not e.g. with Linux pipes.
		* The call may return only part of the requested data and a new call is needed to get more.&quot;
		*/
		$contents = '';
		do {
			$part = fread($this-&gt;getid3-&gt;fp, $bytes);
			$partLength  = strlen($part);
			$bytes      -= $partLength;
			$contents   .= $part;
		} while (($bytes &gt; 0) &amp;&amp; ($partLength &gt; 0));
		return $contents;
	}

	protected function fseek($bytes, $whence=SEEK_SET) {
		if ($this-&gt;data_string_flag) {
			switch ($whence) {
				case SEEK_SET:
					$this-&gt;data_string_position = $bytes;
					break;

				case SEEK_CUR:
					$this-&gt;data_string_position += $bytes;
					break;

				case SEEK_END:
					$this-&gt;data_string_position = $this-&gt;data_string_length + $bytes;
					break;
			}
			return 0;
		} else {
			$pos = $bytes;
			if ($whence == SEEK_CUR) {
				$pos = $this-&gt;ftell() + $bytes;
			} elseif ($whence == SEEK_END) {
				$pos = $this-&gt;getid3-&gt;info['filesize'] + $bytes;
			}
			if (!getid3_lib::intValueSupported($pos)) {
				throw new getid3_exception('cannot fseek('.$pos.') because beyond PHP filesystem limit', 10);
			}
		}
		return fseek($this-&gt;getid3-&gt;fp, $bytes, $whence);
	}

	protected function feof() {
		if ($this-&gt;data_string_flag) {
			return $this-&gt;data_string_position &gt;= $this-&gt;data_string_length;
		}
		return feof($this-&gt;getid3-&gt;fp);
	}

	final protected function isDependencyFor($module) {
		return $this-&gt;dependency_to == $module;
	}

	protected function error($text) {
		$this-&gt;getid3-&gt;info['error'][] = $text;

		return false;
	}

	protected function warning($text) {
		return $this-&gt;getid3-&gt;warning($text);
	}

	protected function notice($text) {
		// does nothing for now
	}

	public function saveAttachment($name, $offset, $length, $image_mime=null) {
		try {

			// do not extract at all
			if ($this-&gt;getid3-&gt;option_save_attachments === getID3::ATTACHMENTS_NONE) {

				$attachment = null; // do not set any

			// extract to return array
			} elseif ($this-&gt;getid3-&gt;option_save_attachments === getID3::ATTACHMENTS_INLINE) {

				$this-&gt;fseek($offset);
				$attachment = $this-&gt;fread($length); // get whole data in one pass, till it is anyway stored in memory
				if ($attachment === false || strlen($attachment) != $length) {
					throw new Exception('failed to read attachment data');
				}

			// assume directory path is given
			} else {

				// set up destination path
				$dir = rtrim(str_replace(array('/', '\\'), DIRECTORY_SEPARATOR, $this-&gt;getid3-&gt;option_save_attachments), DIRECTORY_SEPARATOR);
				if (!is_dir($dir) || !getID3::is_writable($dir)) { // check supplied directory
					throw new Exception('supplied path ('.$dir.') does not exist, or is not writable');
				}
				$dest = $dir.DIRECTORY_SEPARATOR.$name.($image_mime ? '.'.getid3_lib::ImageExtFromMime($image_mime) : '');

				// create dest file
				if (($fp_dest = fopen($dest, 'wb')) == false) {
					throw new Exception('failed to create file '.$dest);
				}

				// copy data
				$this-&gt;fseek($offset);
				$buffersize = ($this-&gt;data_string_flag ? $length : $this-&gt;getid3-&gt;fread_buffer_size());
				$bytesleft = $length;
				while ($bytesleft &gt; 0) {
					if (($buffer = $this-&gt;fread(min($buffersize, $bytesleft))) === false || ($byteswritten = fwrite($fp_dest, $buffer)) === false || ($byteswritten === 0)) {
						throw new Exception($buffer === false ? 'not enough data to read' : 'failed to write to destination file, may be not enough disk space');
					}
					$bytesleft -= $byteswritten;
				}

				fclose($fp_dest);
				$attachment = $dest;

			}

		} catch (Exception $e) {

			// close and remove dest file if created
			if (isset($fp_dest) &amp;&amp; is_resource($fp_dest)) {
				fclose($fp_dest);
				unlink($dest);
			}

			// do not set any is case of error
			$attachment = null;
			$this-&gt;warning('Failed to extract attachment '.$name.': '.$e-&gt;getMessage());

		}

		// seek to the end of attachment
		$this-&gt;fseek($offset + $length);

		return $attachment;
	}

}


class getid3_exception extends Exception
{
	public $message;
}
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