getID3::__construct()

399	public function __construct() {400 401		// Check for PHP version402		$required_php_version = '5.3.0';403		if (version_compare(PHP_VERSION, $required_php_version, '<')) {404			$this->startup_error .= 'getID3() requires PHP v'.$required_php_version.' or higher - you are running v'.PHP_VERSION."\n";405			return;406		}407 408		// Check memory409		$memoryLimit = ini_get('memory_limit');410		if (preg_match('#([0-9]+) ?M#i', $memoryLimit, $matches)) {411			// could be stored as "16M" rather than 16777216 for example412			$memoryLimit = $matches[1] * 1048576;413		} elseif (preg_match('#([0-9]+) ?G#i', $memoryLimit, $matches)) { // The 'G' modifier is available since PHP 5.1.0414			// could be stored as "2G" rather than 2147483648 for example415			$memoryLimit = $matches[1] * 1073741824;416		}417		$this->memory_limit = $memoryLimit;418 419		if ($this->memory_limit <= 0) {420			// memory limits probably disabled421		} elseif ($this->memory_limit <= 4194304) {422			$this->startup_error .= 'PHP has less than 4MB available memory and will very likely run out. Increase memory_limit in php.ini'."\n";423		} elseif ($this->memory_limit <= 12582912) {424			$this->startup_warning .= 'PHP has less than 12MB available memory and might run out if all modules are loaded. Increase memory_limit in php.ini'."\n";425		}426 427		// Check safe_mode off428		if (preg_match('#(1|ON)#i', ini_get('safe_mode'))) { // phpcs:ignore PHPCompatibility.IniDirectives.RemovedIniDirectives.safe_modeDeprecatedRemoved429			$this->warning('WARNING: Safe mode is on, shorten support disabled, md5data/sha1data for ogg vorbis disabled, ogg vorbos/flac tag writing disabled.');430		}431 432		// phpcs:ignore PHPCompatibility.IniDirectives.RemovedIniDirectives.mbstring_func_overloadDeprecated433		if (($mbstring_func_overload = (int) ini_get('mbstring.func_overload')) && ($mbstring_func_overload & 0x02)) {434			// http://php.net/manual/en/mbstring.overload.php435			// "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"436			// 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.437			// phpcs:ignore PHPCompatibility.IniDirectives.RemovedIniDirectives.mbstring_func_overloadDeprecated438			$this->startup_error .= 'WARNING: php.ini contains "mbstring.func_overload = '.ini_get('mbstring.func_overload').'", getID3 cannot run with this setting (bitmask 2 (string functions) cannot be set). Recommended to disable entirely.'."\n";439		}440 441		// check for magic quotes in PHP < 5.4.0 (when these options were removed and getters always return false)442		if (version_compare(PHP_VERSION, '5.4.0', '<')) {443			// Check for magic_quotes_runtime444			if (function_exists('get_magic_quotes_runtime')) {445				// phpcs:ignore PHPCompatibility.FunctionUse.RemovedFunctions.get_magic_quotes_runtimeDeprecated446				if (get_magic_quotes_runtime()) { // @phpstan-ignore-line447					$this->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).'."\n";448				}449			}450			// Check for magic_quotes_gpc451			if (function_exists('get_magic_quotes_gpc')) {452				// phpcs:ignore PHPCompatibility.FunctionUse.RemovedFunctions.get_magic_quotes_gpcDeprecated453				if (get_magic_quotes_gpc()) { // @phpstan-ignore-line454					$this->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).'."\n";455				}456			}457		}458 459		// Load support library460		if (!include_once(GETID3_INCLUDEPATH.'getid3.lib.php')) {461			$this->startup_error .= 'getid3.lib.php is missing or corrupt'."\n";462		}463 464		if ($this->option_max_2gb_check === null) {465			$this->option_max_2gb_check = (PHP_INT_MAX <= 2147483647);466		}467 468 469		// Needed for Windows only:470		// Define locations of helper applications for Shorten, VorbisComment, MetaFLAC471		//   as well as other helper functions such as head, etc472		// This path cannot contain spaces, but the below code will attempt to get the473		//   8.3-equivalent path automatically474		// IMPORTANT: This path must include the trailing slash475		if (GETID3_OS_ISWINDOWS && !defined('GETID3_HELPERAPPSDIR')) {476 477			$helperappsdir = GETID3_INCLUDEPATH.'..'.DIRECTORY_SEPARATOR.'helperapps'; // must not have any space in this path478