<?php

/*
 * 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.
 */

use Symfony\Polyfill\Php56 as p;

if (PHP_VERSION_ID >= 50600) {
    return;
}

if (!function_exists('hash_equals')) {
    function hash_equals($known_string, $user_string) { return p\Php56::hash_equals($known_string, $user_string); }
}
if (extension_loaded('ldap') && !defined('LDAP_ESCAPE_FILTER')) {
    define('LDAP_ESCAPE_FILTER', 1);
}
if (extension_loaded('ldap') && !defined('LDAP_ESCAPE_DN')) {
    define('LDAP_ESCAPE_DN', 2);
}

if (extension_loaded('ldap') && !function_exists('ldap_escape')) {
    function ldap_escape($value, $ignore = '', $flags = 0) { return p\Php56::ldap_escape($value, $ignore, $flags); }
}

if (50509 === PHP_VERSION_ID && 4 === PHP_INT_SIZE) {
    // Missing functions in PHP 5.5.9 - affects 32 bit builds of Ubuntu 14.04LTS
    // See https://bugs.launchpad.net/ubuntu/+source/php5/+bug/1315888
    if (!function_exists('gzopen') && function_exists('gzopen64')) {
        function gzopen($filename, $mode, $use_include_path = 0) { return gzopen64($filename, $mode, $use_include_path); }
    }
    if (!function_exists('gzseek') && function_exists('gzseek64')) {
        function gzseek($fp, $offset, $whence = SEEK_SET) { return gzseek64($fp, $offset, $whence); }
    }
    if (!function_exists('gztell') && function_exists('gztell64')) {
        function gztell($fp) { return gztell64($fp); }
    }
}