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<?php
/**
 * Note: This file has been modified for PHP 7.2 compatibility.
 * See:
 * - https://github.com/PrestaShop/PrestaShop/pull/9409
 * - https://github.com/sensiolabs/SensioDistributionBundle/pull/336
 */

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * 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 <http://tobion.de>
 */
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 <http://tobion.de>
 */
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<a href="#phpini">*</a>.',
 $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 <http://tobion.de>
 */
class RequirementCollection implements IteratorAggregate
{
 /**
 * @var Requirement[]
 */
 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 Requirement[]
     */
    public function all()
    {
        return $this->requirements;
    }

/**
     * Returns all mandatory requirements.
     *
     * @return Requirement[]
     */
    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 Requirement[]
     */
    public function getFailedRequirements()
    {
        $array = array();
        foreach ($this->requirements as $req) {
            if (!$req->isFulfilled() && !$req->isOptional()) {
                $array[] = $req;
            }
        }

return $array;
    }

/**
     * Returns all optional recommendations.
     *
     * @return Requirement[]
     */
    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 Requirement[]
     */
    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 <http://tobion.de>
 * @author Fabien Potencier <fabien@symfony.com>
 */
class SymfonyRequirements extends RequirementCollection
{
 const LEGACY_REQUIRED_PHP_VERSION = '5.3.3';
 const REQUIRED_PHP_VERSION = '5.5.9';

/**
     * Constructor that initializes the requirements.
     */
    public function __construct()
    {
        /* mandatory requirements follow */

$installedPhpVersion = PHP_VERSION;
        $requiredPhpVersion = $this->getPhpRequiredVersion();

$this->addRecommendation(
 $requiredPhpVersion,
 'Vendors should be installed in order to check all requirements.',
 'Run the <code>composer install</code> command.',
 'Run the "composer install" command.'
 );

if (false !== $requiredPhpVersion) {
 $this->addRequirement(
 version_compare($installedPhpVersion, $requiredPhpVersion, '>='),
 sprintf('PHP version must be at least %s (%s installed)', $requiredPhpVersion, $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,
 $requiredPhpVersion
 ),
 sprintf('Install PHP %s or newer (installed version is %s)', $requiredPhpVersion, $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 <a href="http://getcomposer.org/">http://getcomposer.org/</a>. '.
 '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.'
 );

if (version_compare($installedPhpVersion, '7.0.0', '<')) {
 $this->addPhpIniRequirement(
 'date.timezone',
 true,
 false,
 'date.timezone setting must be set',
 'Set the "date.timezone" setting in php.ini<a href="#phpini">*</a> (like Europe/Paris).'
 );
 }

if (false !== $requiredPhpVersion && version_compare($installedPhpVersion, $requiredPhpVersion, '>=')) {
 $this->addRequirement(
 in_array(@date_default_timezone_get(), DateTimeZone::listIdentifiers(), true),
 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 <a href="http://php.net/manual/en/timezones.others.php">http://php.net/manual/en/timezones.others.php</a>.'
 );
 }

$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')) {
 $this->addPhpIniRequirement(
 'suhosin.executor.include.whitelist',
 function ($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<a href="#phpini">*</a>.'
 );
 }

if (extension_loaded('xdebug')) {
            $this->addPhpIniRequirement(
                'xdebug.show_exception_trace',
                false,
                true
            );

$this->addPhpIniRequirement(
                'xdebug.scream',
                false,
                true
            );

$this->addPhpIniRecommendation(
 'xdebug.max_nesting_level',
 function ($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<a href="#phpini">*</a> 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')) {
 $this->addPhpIniRequirement(
 'mbstring.func_overload',
 function ($cfgValue) { return (int) $cfgValue === 0; },
 true,
 'string functions should not be overloaded',
 'Set "mbstring.func_overload" to 0 in php.ini<a href="#phpini">*</a> 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('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+).'
 );

if (class_exists('Symfony\Component\Intl\Intl')) {
 $this->addRecommendation(
 \Symfony\Component\Intl\Intl::getIcuDataVersion() <= \Symfony\Component\Intl\Intl::getIcuVersion(),
 sprintf('intl ICU version installed on your system is outdated (%s) and does not match the ICU data bundled with Symfony (%s)', \Symfony\Component\Intl\Intl::getIcuVersion(), \Symfony\Component\Intl\Intl::getIcuDataVersion()),
 'To get the latest internationalization data upgrade the ICU system package and the intl PHP extension.'
 );
 if (\Symfony\Component\Intl\Intl::getIcuDataVersion() <= \Symfony\Component\Intl\Intl::getIcuVersion()) {
 $this->addRecommendation(
 \Symfony\Component\Intl\Intl::getIcuDataVersion() === \Symfony\Component\Intl\Intl::getIcuVersion(),
 sprintf('intl ICU version installed on your system (%s) does not match the ICU data bundled with Symfony (%s)', \Symfony\Component\Intl\Intl::getIcuVersion(), \Symfony\Component\Intl\Intl::getIcuDataVersion()),
 'To avoid internationalization data inconsistencies upgrade the symfony/intl component.'
 );
 }
 }

$this->addPhpIniRecommendation(
 'intl.error_level',
 function ($cfgValue) { return (int) $cfgValue === 0; },
 true,
 'intl.error_level should be 0 in php.ini',
 'Set "intl.error_level" to "0" in php.ini<a href="#phpini">*</a> 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 ('WIN' === strtoupper(substr(PHP_OS, 0, 3))) {
 $this->addRecommendation(
 $this->getRealpathCacheSize() >= 5 * 1024 * 1024,
 'realpath_cache_size should be at least 5M in php.ini',
 'Setting "realpath_cache_size" to e.g. "5242880" or "5M" in php.ini<a href="#phpini">*</a> may improve performance on Windows significantly in some cases.'
 );
 }

$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);
        $unit = '';
        if (!ctype_digit($size)) {
            $unit = strtolower(substr($size, -1, 1));
            $size = (int) substr($size, 0, -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;
        }
    }

/**
     * Defines PHP required version from Symfony version.
     *
     * @return string|false The PHP required version or false if it could not be guessed
     */
    protected function getPhpRequiredVersion()
    {
        if (!file_exists($path = __DIR__.'/../composer.lock')) {
            return false;
        }

$composerLock = json_decode(file_get_contents($path), true);
        foreach ($composerLock['packages'] as $package) {
            $name = $package['name'];
            if ('symfony/symfony' !== $name && 'symfony/http-kernel' !== $name) {
                continue;
            }

return (int) $package['version'][1] > 2 ? self::REQUIRED_PHP_VERSION : self::LEGACY_REQUIRED_PHP_VERSION;
        }

return false;
    }
}

[+] ..
[+] sessions
[+] logs
[-] .htaccess [open]
[+] cache
[-] SymfonyRequirements.php [open]