X-Git-Url: https://git.immae.eu/?a=blobdiff_plain;f=var%2FSymfonyRequirements.php;fp=var%2FSymfonyRequirements.php;h=28b0dcdbfcd82a6265fa39f57325fbf46747ce09;hb=73cd160bfc6e4a1b88f2117eb0c097a91ac5c753;hp=0000000000000000000000000000000000000000;hpb=1d405d0e62a708928bccd2222ebd89d4804231f9;p=github%2Fwallabag%2Fwallabag.git diff --git a/var/SymfonyRequirements.php b/var/SymfonyRequirements.php new file mode 100644 index 00000000..28b0dcdb --- /dev/null +++ b/var/SymfonyRequirements.php @@ -0,0 +1,764 @@ + + * + * For the full copyright and license information, please view the LICENSE + * file that was distributed with this source code. + */ + +/* + * Users of PHP 5.2 should be able to run the requirements checks. + * This is why the file and all classes must be compatible with PHP 5.2+ + * (e.g. not using namespaces and closures). + * + * ************** CAUTION ************** + * + * DO NOT EDIT THIS FILE as it will be overridden by Composer as part of + * the installation/update process. The original file resides in the + * SensioDistributionBundle. + * + * ************** CAUTION ************** + */ + +/** + * Represents a single PHP requirement, e.g. an installed extension. + * It can be a mandatory requirement or an optional recommendation. + * There is a special subclass, named PhpIniRequirement, to check a php.ini configuration. + * + * @author Tobias Schultze + */ +class Requirement +{ + private $fulfilled; + private $testMessage; + private $helpText; + private $helpHtml; + private $optional; + + /** + * Constructor that initializes the requirement. + * + * @param bool $fulfilled Whether the requirement is fulfilled + * @param string $testMessage The message for testing the requirement + * @param string $helpHtml The help text formatted in HTML for resolving the problem + * @param string|null $helpText The help text (when null, it will be inferred from $helpHtml, i.e. stripped from HTML tags) + * @param bool $optional Whether this is only an optional recommendation not a mandatory requirement + */ + public function __construct($fulfilled, $testMessage, $helpHtml, $helpText = null, $optional = false) + { + $this->fulfilled = (bool) $fulfilled; + $this->testMessage = (string) $testMessage; + $this->helpHtml = (string) $helpHtml; + $this->helpText = null === $helpText ? strip_tags($this->helpHtml) : (string) $helpText; + $this->optional = (bool) $optional; + } + + /** + * Returns whether the requirement is fulfilled. + * + * @return bool true if fulfilled, otherwise false + */ + public function isFulfilled() + { + return $this->fulfilled; + } + + /** + * Returns the message for testing the requirement. + * + * @return string The test message + */ + public function getTestMessage() + { + return $this->testMessage; + } + + /** + * Returns the help text for resolving the problem. + * + * @return string The help text + */ + public function getHelpText() + { + return $this->helpText; + } + + /** + * Returns the help text formatted in HTML. + * + * @return string The HTML help + */ + public function getHelpHtml() + { + return $this->helpHtml; + } + + /** + * Returns whether this is only an optional recommendation and not a mandatory requirement. + * + * @return bool true if optional, false if mandatory + */ + public function isOptional() + { + return $this->optional; + } +} + +/** + * Represents a PHP requirement in form of a php.ini configuration. + * + * @author Tobias Schultze + */ +class PhpIniRequirement extends Requirement +{ + /** + * Constructor that initializes the requirement. + * + * @param string $cfgName The configuration name used for ini_get() + * @param bool|callback $evaluation Either a boolean indicating whether the configuration should evaluate to true or false, + * or a callback function receiving the configuration value as parameter to determine the fulfillment of the requirement + * @param bool $approveCfgAbsence If true the Requirement will be fulfilled even if the configuration option does not exist, i.e. ini_get() returns false. + * This is helpful for abandoned configs in later PHP versions or configs of an optional extension, like Suhosin. + * Example: You require a config to be true but PHP later removes this config and defaults it to true internally. + * @param string|null $testMessage The message for testing the requirement (when null and $evaluation is a boolean a default message is derived) + * @param string|null $helpHtml The help text formatted in HTML for resolving the problem (when null and $evaluation is a boolean a default help is derived) + * @param string|null $helpText The help text (when null, it will be inferred from $helpHtml, i.e. stripped from HTML tags) + * @param bool $optional Whether this is only an optional recommendation not a mandatory requirement + */ + public function __construct($cfgName, $evaluation, $approveCfgAbsence = false, $testMessage = null, $helpHtml = null, $helpText = null, $optional = false) + { + $cfgValue = ini_get($cfgName); + + if (is_callable($evaluation)) { + if (null === $testMessage || null === $helpHtml) { + throw new InvalidArgumentException('You must provide the parameters testMessage and helpHtml for a callback evaluation.'); + } + + $fulfilled = call_user_func($evaluation, $cfgValue); + } else { + if (null === $testMessage) { + $testMessage = sprintf('%s %s be %s in php.ini', + $cfgName, + $optional ? 'should' : 'must', + $evaluation ? 'enabled' : 'disabled' + ); + } + + if (null === $helpHtml) { + $helpHtml = sprintf('Set %s to %s in php.ini*.', + $cfgName, + $evaluation ? 'on' : 'off' + ); + } + + $fulfilled = $evaluation == $cfgValue; + } + + parent::__construct($fulfilled || ($approveCfgAbsence && false === $cfgValue), $testMessage, $helpHtml, $helpText, $optional); + } +} + +/** + * A RequirementCollection represents a set of Requirement instances. + * + * @author Tobias Schultze + */ +class RequirementCollection implements IteratorAggregate +{ + private $requirements = array(); + + /** + * Gets the current RequirementCollection as an Iterator. + * + * @return Traversable A Traversable interface + */ + public function getIterator() + { + return new ArrayIterator($this->requirements); + } + + /** + * Adds a Requirement. + * + * @param Requirement $requirement A Requirement instance + */ + public function add(Requirement $requirement) + { + $this->requirements[] = $requirement; + } + + /** + * Adds a mandatory requirement. + * + * @param bool $fulfilled Whether the requirement is fulfilled + * @param string $testMessage The message for testing the requirement + * @param string $helpHtml The help text formatted in HTML for resolving the problem + * @param string|null $helpText The help text (when null, it will be inferred from $helpHtml, i.e. stripped from HTML tags) + */ + public function addRequirement($fulfilled, $testMessage, $helpHtml, $helpText = null) + { + $this->add(new Requirement($fulfilled, $testMessage, $helpHtml, $helpText, false)); + } + + /** + * Adds an optional recommendation. + * + * @param bool $fulfilled Whether the recommendation is fulfilled + * @param string $testMessage The message for testing the recommendation + * @param string $helpHtml The help text formatted in HTML for resolving the problem + * @param string|null $helpText The help text (when null, it will be inferred from $helpHtml, i.e. stripped from HTML tags) + */ + public function addRecommendation($fulfilled, $testMessage, $helpHtml, $helpText = null) + { + $this->add(new Requirement($fulfilled, $testMessage, $helpHtml, $helpText, true)); + } + + /** + * Adds a mandatory requirement in form of a php.ini configuration. + * + * @param string $cfgName The configuration name used for ini_get() + * @param bool|callback $evaluation Either a boolean indicating whether the configuration should evaluate to true or false, + * or a callback function receiving the configuration value as parameter to determine the fulfillment of the requirement + * @param bool $approveCfgAbsence If true the Requirement will be fulfilled even if the configuration option does not exist, i.e. ini_get() returns false. + * This is helpful for abandoned configs in later PHP versions or configs of an optional extension, like Suhosin. + * Example: You require a config to be true but PHP later removes this config and defaults it to true internally. + * @param string $testMessage The message for testing the requirement (when null and $evaluation is a boolean a default message is derived) + * @param string $helpHtml The help text formatted in HTML for resolving the problem (when null and $evaluation is a boolean a default help is derived) + * @param string|null $helpText The help text (when null, it will be inferred from $helpHtml, i.e. stripped from HTML tags) + */ + public function addPhpIniRequirement($cfgName, $evaluation, $approveCfgAbsence = false, $testMessage = null, $helpHtml = null, $helpText = null) + { + $this->add(new PhpIniRequirement($cfgName, $evaluation, $approveCfgAbsence, $testMessage, $helpHtml, $helpText, false)); + } + + /** + * Adds an optional recommendation in form of a php.ini configuration. + * + * @param string $cfgName The configuration name used for ini_get() + * @param bool|callback $evaluation Either a boolean indicating whether the configuration should evaluate to true or false, + * or a callback function receiving the configuration value as parameter to determine the fulfillment of the requirement + * @param bool $approveCfgAbsence If true the Requirement will be fulfilled even if the configuration option does not exist, i.e. ini_get() returns false. + * This is helpful for abandoned configs in later PHP versions or configs of an optional extension, like Suhosin. + * Example: You require a config to be true but PHP later removes this config and defaults it to true internally. + * @param string $testMessage The message for testing the requirement (when null and $evaluation is a boolean a default message is derived) + * @param string $helpHtml The help text formatted in HTML for resolving the problem (when null and $evaluation is a boolean a default help is derived) + * @param string|null $helpText The help text (when null, it will be inferred from $helpHtml, i.e. stripped from HTML tags) + */ + public function addPhpIniRecommendation($cfgName, $evaluation, $approveCfgAbsence = false, $testMessage = null, $helpHtml = null, $helpText = null) + { + $this->add(new PhpIniRequirement($cfgName, $evaluation, $approveCfgAbsence, $testMessage, $helpHtml, $helpText, true)); + } + + /** + * Adds a requirement collection to the current set of requirements. + * + * @param RequirementCollection $collection A RequirementCollection instance + */ + public function addCollection(RequirementCollection $collection) + { + $this->requirements = array_merge($this->requirements, $collection->all()); + } + + /** + * Returns both requirements and recommendations. + * + * @return array Array of Requirement instances + */ + public function all() + { + return $this->requirements; + } + + /** + * Returns all mandatory requirements. + * + * @return array Array of Requirement instances + */ + public function getRequirements() + { + $array = array(); + foreach ($this->requirements as $req) { + if (!$req->isOptional()) { + $array[] = $req; + } + } + + return $array; + } + + /** + * Returns the mandatory requirements that were not met. + * + * @return array Array of Requirement instances + */ + public function getFailedRequirements() + { + $array = array(); + foreach ($this->requirements as $req) { + if (!$req->isFulfilled() && !$req->isOptional()) { + $array[] = $req; + } + } + + return $array; + } + + /** + * Returns all optional recommendations. + * + * @return array Array of Requirement instances + */ + public function getRecommendations() + { + $array = array(); + foreach ($this->requirements as $req) { + if ($req->isOptional()) { + $array[] = $req; + } + } + + return $array; + } + + /** + * Returns the recommendations that were not met. + * + * @return array Array of Requirement instances + */ + public function getFailedRecommendations() + { + $array = array(); + foreach ($this->requirements as $req) { + if (!$req->isFulfilled() && $req->isOptional()) { + $array[] = $req; + } + } + + return $array; + } + + /** + * Returns whether a php.ini configuration is not correct. + * + * @return bool php.ini configuration problem? + */ + public function hasPhpIniConfigIssue() + { + foreach ($this->requirements as $req) { + if (!$req->isFulfilled() && $req instanceof PhpIniRequirement) { + return true; + } + } + + return false; + } + + /** + * Returns the PHP configuration file (php.ini) path. + * + * @return string|false php.ini file path + */ + public function getPhpIniConfigPath() + { + return get_cfg_var('cfg_file_path'); + } +} + +/** + * This class specifies all requirements and optional recommendations that + * are necessary to run the Symfony Standard Edition. + * + * @author Tobias Schultze + * @author Fabien Potencier + */ +class SymfonyRequirements extends RequirementCollection +{ + const REQUIRED_PHP_VERSION = '5.3.3'; + + /** + * Constructor that initializes the requirements. + */ + public function __construct() + { + /* mandatory requirements follow */ + + $installedPhpVersion = phpversion(); + + $this->addRequirement( + version_compare($installedPhpVersion, self::REQUIRED_PHP_VERSION, '>='), + sprintf('PHP version must be at least %s (%s installed)', self::REQUIRED_PHP_VERSION, $installedPhpVersion), + sprintf('You are running PHP version "%s", but Symfony needs at least PHP "%s" to run. + Before using Symfony, upgrade your PHP installation, preferably to the latest version.', + $installedPhpVersion, self::REQUIRED_PHP_VERSION), + sprintf('Install PHP %s or newer (installed version is %s)', self::REQUIRED_PHP_VERSION, $installedPhpVersion) + ); + + $this->addRequirement( + version_compare($installedPhpVersion, '5.3.16', '!='), + 'PHP version must not be 5.3.16 as Symfony won\'t work properly with it', + 'Install PHP 5.3.17 or newer (or downgrade to an earlier PHP version)' + ); + + $this->addRequirement( + is_dir(__DIR__.'/../vendor/composer'), + 'Vendor libraries must be installed', + 'Vendor libraries are missing. Install composer following instructions from http://getcomposer.org/. '. + 'Then run "php composer.phar install" to install them.' + ); + + $cacheDir = is_dir(__DIR__.'/../var/cache') ? __DIR__.'/../var/cache' : __DIR__.'/cache'; + + $this->addRequirement( + is_writable($cacheDir), + 'app/cache/ or var/cache/ directory must be writable', + 'Change the permissions of either "app/cache/" or "var/cache/" directory so that the web server can write into it.' + ); + + $logsDir = is_dir(__DIR__.'/../var/logs') ? __DIR__.'/../var/logs' : __DIR__.'/logs'; + + $this->addRequirement( + is_writable($logsDir), + 'app/logs/ or var/logs/ directory must be writable', + 'Change the permissions of either "app/logs/" or "var/logs/" directory so that the web server can write into it.' + ); + + $this->addPhpIniRequirement( + 'date.timezone', true, false, + 'date.timezone setting must be set', + 'Set the "date.timezone" setting in php.ini* (like Europe/Paris).' + ); + + if (version_compare($installedPhpVersion, self::REQUIRED_PHP_VERSION, '>=')) { + $timezones = array(); + foreach (DateTimeZone::listAbbreviations() as $abbreviations) { + foreach ($abbreviations as $abbreviation) { + $timezones[$abbreviation['timezone_id']] = true; + } + } + + $this->addRequirement( + isset($timezones[@date_default_timezone_get()]), + sprintf('Configured default timezone "%s" must be supported by your installation of PHP', @date_default_timezone_get()), + 'Your default timezone is not supported by PHP. Check for typos in your php.ini file and have a look at the list of deprecated timezones at http://php.net/manual/en/timezones.others.php.' + ); + } + + $this->addRequirement( + function_exists('iconv'), + 'iconv() must be available', + 'Install and enable the iconv extension.' + ); + + $this->addRequirement( + function_exists('json_encode'), + 'json_encode() must be available', + 'Install and enable the JSON extension.' + ); + + $this->addRequirement( + function_exists('session_start'), + 'session_start() must be available', + 'Install and enable the session extension.' + ); + + $this->addRequirement( + function_exists('ctype_alpha'), + 'ctype_alpha() must be available', + 'Install and enable the ctype extension.' + ); + + $this->addRequirement( + function_exists('token_get_all'), + 'token_get_all() must be available', + 'Install and enable the Tokenizer extension.' + ); + + $this->addRequirement( + function_exists('simplexml_import_dom'), + 'simplexml_import_dom() must be available', + 'Install and enable the SimpleXML extension.' + ); + + if (function_exists('apc_store') && ini_get('apc.enabled')) { + if (version_compare($installedPhpVersion, '5.4.0', '>=')) { + $this->addRequirement( + version_compare(phpversion('apc'), '3.1.13', '>='), + 'APC version must be at least 3.1.13 when using PHP 5.4', + 'Upgrade your APC extension (3.1.13+).' + ); + } else { + $this->addRequirement( + version_compare(phpversion('apc'), '3.0.17', '>='), + 'APC version must be at least 3.0.17', + 'Upgrade your APC extension (3.0.17+).' + ); + } + } + + $this->addPhpIniRequirement('detect_unicode', false); + + if (extension_loaded('suhosin')) { + $this->addPhpIniRequirement( + 'suhosin.executor.include.whitelist', + create_function('$cfgValue', 'return false !== stripos($cfgValue, "phar");'), + false, + 'suhosin.executor.include.whitelist must be configured correctly in php.ini', + 'Add "phar" to suhosin.executor.include.whitelist in php.ini*.' + ); + } + + if (extension_loaded('xdebug')) { + $this->addPhpIniRequirement( + 'xdebug.show_exception_trace', false, true + ); + + $this->addPhpIniRequirement( + 'xdebug.scream', false, true + ); + + $this->addPhpIniRecommendation( + 'xdebug.max_nesting_level', + create_function('$cfgValue', 'return $cfgValue > 100;'), + true, + 'xdebug.max_nesting_level should be above 100 in php.ini', + 'Set "xdebug.max_nesting_level" to e.g. "250" in php.ini* to stop Xdebug\'s infinite recursion protection erroneously throwing a fatal error in your project.' + ); + } + + $pcreVersion = defined('PCRE_VERSION') ? (float) PCRE_VERSION : null; + + $this->addRequirement( + null !== $pcreVersion, + 'PCRE extension must be available', + 'Install the PCRE extension (version 8.0+).' + ); + + if (extension_loaded('mbstring')) { + $this->addPhpIniRequirement( + 'mbstring.func_overload', + create_function('$cfgValue', 'return (int) $cfgValue === 0;'), + true, + 'string functions should not be overloaded', + 'Set "mbstring.func_overload" to 0 in php.ini* to disable function overloading by the mbstring extension.' + ); + } + + /* optional recommendations follow */ + + if (file_exists(__DIR__.'/../vendor/composer')) { + require_once __DIR__.'/../vendor/autoload.php'; + + try { + $r = new ReflectionClass('Sensio\Bundle\DistributionBundle\SensioDistributionBundle'); + + $contents = file_get_contents(dirname($r->getFileName()).'/Resources/skeleton/app/SymfonyRequirements.php'); + } catch (ReflectionException $e) { + $contents = ''; + } + $this->addRecommendation( + file_get_contents(__FILE__) === $contents, + 'Requirements file should be up-to-date', + 'Your requirements file is outdated. Run composer install and re-check your configuration.' + ); + } + + $this->addRecommendation( + version_compare($installedPhpVersion, '5.3.4', '>='), + 'You should use at least PHP 5.3.4 due to PHP bug #52083 in earlier versions', + 'Your project might malfunction randomly due to PHP bug #52083 ("Notice: Trying to get property of non-object"). Install PHP 5.3.4 or newer.' + ); + + $this->addRecommendation( + version_compare($installedPhpVersion, '5.3.8', '>='), + 'When using annotations you should have at least PHP 5.3.8 due to PHP bug #55156', + 'Install PHP 5.3.8 or newer if your project uses annotations.' + ); + + $this->addRecommendation( + version_compare($installedPhpVersion, '5.4.0', '!='), + 'You should not use PHP 5.4.0 due to the PHP bug #61453', + 'Your project might not work properly due to the PHP bug #61453 ("Cannot dump definitions which have method calls"). Install PHP 5.4.1 or newer.' + ); + + $this->addRecommendation( + version_compare($installedPhpVersion, '5.4.11', '>='), + 'When using the logout handler from the Symfony Security Component, you should have at least PHP 5.4.11 due to PHP bug #63379 (as a workaround, you can also set invalidate_session to false in the security logout handler configuration)', + 'Install PHP 5.4.11 or newer if your project uses the logout handler from the Symfony Security Component.' + ); + + $this->addRecommendation( + (version_compare($installedPhpVersion, '5.3.18', '>=') && version_compare($installedPhpVersion, '5.4.0', '<')) + || + version_compare($installedPhpVersion, '5.4.8', '>='), + 'You should use PHP 5.3.18+ or PHP 5.4.8+ to always get nice error messages for fatal errors in the development environment due to PHP bug #61767/#60909', + 'Install PHP 5.3.18+ or PHP 5.4.8+ if you want nice error messages for all fatal errors in the development environment.' + ); + + if (null !== $pcreVersion) { + $this->addRecommendation( + $pcreVersion >= 8.0, + sprintf('PCRE extension should be at least version 8.0 (%s installed)', $pcreVersion), + 'PCRE 8.0+ is preconfigured in PHP since 5.3.2 but you are using an outdated version of it. Symfony probably works anyway but it is recommended to upgrade your PCRE extension.' + ); + } + + $this->addRecommendation( + class_exists('DomDocument'), + 'PHP-DOM and PHP-XML modules should be installed', + 'Install and enable the PHP-DOM and the PHP-XML modules.' + ); + + $this->addRecommendation( + function_exists('mb_strlen'), + 'mb_strlen() should be available', + 'Install and enable the mbstring extension.' + ); + + $this->addRecommendation( + function_exists('iconv'), + 'iconv() should be available', + 'Install and enable the iconv extension.' + ); + + $this->addRecommendation( + function_exists('utf8_decode'), + 'utf8_decode() should be available', + 'Install and enable the XML extension.' + ); + + $this->addRecommendation( + function_exists('filter_var'), + 'filter_var() should be available', + 'Install and enable the filter extension.' + ); + + if (!defined('PHP_WINDOWS_VERSION_BUILD')) { + $this->addRecommendation( + function_exists('posix_isatty'), + 'posix_isatty() should be available', + 'Install and enable the php_posix extension (used to colorize the CLI output).' + ); + } + + $this->addRecommendation( + extension_loaded('intl'), + 'intl extension should be available', + 'Install and enable the intl extension (used for validators).' + ); + + if (extension_loaded('intl')) { + // in some WAMP server installations, new Collator() returns null + $this->addRecommendation( + null !== new Collator('fr_FR'), + 'intl extension should be correctly configured', + 'The intl extension does not behave properly. This problem is typical on PHP 5.3.X x64 WIN builds.' + ); + + // check for compatible ICU versions (only done when you have the intl extension) + if (defined('INTL_ICU_VERSION')) { + $version = INTL_ICU_VERSION; + } else { + $reflector = new ReflectionExtension('intl'); + + ob_start(); + $reflector->info(); + $output = strip_tags(ob_get_clean()); + + preg_match('/^ICU version +(?:=> )?(.*)$/m', $output, $matches); + $version = $matches[1]; + } + + $this->addRecommendation( + version_compare($version, '4.0', '>='), + 'intl ICU version should be at least 4+', + 'Upgrade your intl extension with a newer ICU version (4+).' + ); + + $this->addPhpIniRecommendation( + 'intl.error_level', + create_function('$cfgValue', 'return (int) $cfgValue === 0;'), + true, + 'intl.error_level should be 0 in php.ini', + 'Set "intl.error_level" to "0" in php.ini* to inhibit the messages when an error occurs in ICU functions.' + ); + } + + $accelerator = + (extension_loaded('eaccelerator') && ini_get('eaccelerator.enable')) + || + (extension_loaded('apc') && ini_get('apc.enabled')) + || + (extension_loaded('Zend Optimizer+') && ini_get('zend_optimizerplus.enable')) + || + (extension_loaded('Zend OPcache') && ini_get('opcache.enable')) + || + (extension_loaded('xcache') && ini_get('xcache.cacher')) + || + (extension_loaded('wincache') && ini_get('wincache.ocenabled')) + ; + + $this->addRecommendation( + $accelerator, + 'a PHP accelerator should be installed', + 'Install and/or enable a PHP accelerator (highly recommended).' + ); + + if (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN') { + $this->addRecommendation( + $this->getRealpathCacheSize() > 1000, + 'realpath_cache_size should be above 1024 in php.ini', + 'Set "realpath_cache_size" to e.g. "1024" in php.ini* to improve performance on windows.' + ); + } + + $this->addPhpIniRecommendation('short_open_tag', false); + + $this->addPhpIniRecommendation('magic_quotes_gpc', false, true); + + $this->addPhpIniRecommendation('register_globals', false, true); + + $this->addPhpIniRecommendation('session.auto_start', false); + + $this->addRecommendation( + class_exists('PDO'), + 'PDO should be installed', + 'Install PDO (mandatory for Doctrine).' + ); + + if (class_exists('PDO')) { + $drivers = PDO::getAvailableDrivers(); + $this->addRecommendation( + count($drivers) > 0, + sprintf('PDO should have some drivers installed (currently available: %s)', count($drivers) ? implode(', ', $drivers) : 'none'), + 'Install PDO drivers (mandatory for Doctrine).' + ); + } + } + + /** + * Loads realpath_cache_size from php.ini and converts it to int. + * + * (e.g. 16k is converted to 16384 int) + * + * @return int + */ + protected function getRealpathCacheSize() + { + $size = ini_get('realpath_cache_size'); + $size = trim($size); + $unit = strtolower(substr($size, -1, 1)); + switch ($unit) { + case 'g': + return $size * 1024 * 1024 * 1024; + case 'm': + return $size * 1024 * 1024; + case 'k': + return $size * 1024; + default: + return (int) $size; + } + } +}