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📄 LICENSE(1.04 KB)
📄 Php56.php(3.8 KB)
📄 README.md(515 B)
📄 bootstrap.php(1.48 KB)
📄 composer.json(862 B)

Editing: Php56.php

<?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.
 */

namespace Symfony\Polyfill\Php56;

use Symfony\Polyfill\Util\Binary;

/**
 * @internal
 */
final class Php56
{
    const LDAP_ESCAPE_FILTER = 1;
    const LDAP_ESCAPE_DN = 2;

public static function hash_equals($knownString, $userInput)
    {
        if (!\is_string($knownString)) {
            trigger_error('Expected known_string to be a string, '.\gettype($knownString).' given', E_USER_WARNING);

return false;
        }

if (!\is_string($userInput)) {
            trigger_error('Expected user_input to be a string, '.\gettype($userInput).' given', E_USER_WARNING);

return false;
        }

$knownLen = Binary::strlen($knownString);
        $userLen = Binary::strlen($userInput);

if ($knownLen !== $userLen) {
            return false;
        }

$result = 0;

for ($i = 0; $i < $knownLen; ++$i) {
            $result |= \ord($knownString[$i]) ^ \ord($userInput[$i]);
        }

return 0 === $result;
    }

/**
     * Stub implementation of the {@link ldap_escape()} function of the ldap
     * extension.
     *
     * Escape strings for safe use in LDAP filters and DNs.
     *
     * @author Chris Wright <ldapi@daverandom.com>
     *
     * @param string $subject
     * @param string $ignore
     * @param int    $flags
     *
     * @return string
     *
     * @see http://stackoverflow.com/a/8561604
     */
    public static function ldap_escape($subject, $ignore = '', $flags = 0)
    {
        static $charMaps = null;

if (null === $charMaps) {
            $charMaps = array(
                self::LDAP_ESCAPE_FILTER => array('\\', '*', '(', ')', "\x00"),
                self::LDAP_ESCAPE_DN => array('\\', ',', '=', '+', '<', '>', ';', '"', '#', "\r"),
            );

$charMaps[0] = array();

for ($i = 0; $i < 256; ++$i) {
                $charMaps[0][\chr($i)] = sprintf('\\%02x', $i);
            }

for ($i = 0, $l = \count($charMaps[self::LDAP_ESCAPE_FILTER]); $i < $l; ++$i) {
                $chr = $charMaps[self::LDAP_ESCAPE_FILTER][$i];
                unset($charMaps[self::LDAP_ESCAPE_FILTER][$i]);
                $charMaps[self::LDAP_ESCAPE_FILTER][$chr] = $charMaps[0][$chr];
            }

for ($i = 0, $l = \count($charMaps[self::LDAP_ESCAPE_DN]); $i < $l; ++$i) {
                $chr = $charMaps[self::LDAP_ESCAPE_DN][$i];
                unset($charMaps[self::LDAP_ESCAPE_DN][$i]);
                $charMaps[self::LDAP_ESCAPE_DN][$chr] = $charMaps[0][$chr];
            }
        }

// Create the base char map to escape
        $flags = (int) $flags;
        $charMap = array();

if ($flags & self::LDAP_ESCAPE_FILTER) {
            $charMap += $charMaps[self::LDAP_ESCAPE_FILTER];
        }

if ($flags & self::LDAP_ESCAPE_DN) {
            $charMap += $charMaps[self::LDAP_ESCAPE_DN];
        }

if (!$charMap) {
            $charMap = $charMaps[0];
        }

// Remove any chars to ignore from the list
        $ignore = (string) $ignore;

for ($i = 0, $l = \strlen($ignore); $i < $l; ++$i) {
            unset($charMap[$ignore[$i]]);
        }

// Do the main replacement
        $result = strtr($subject, $charMap);

// Encode leading/trailing spaces if self::LDAP_ESCAPE_DN is passed
        if ($flags & self::LDAP_ESCAPE_DN) {
            if (' ' === $result[0]) {
                $result = '\\20'.substr($result, 1);
            }

if (' ' === $result[\strlen($result) - 1]) {
                $result = substr($result, 0, -1).'\\20';
            }
        }

return $result;
    }
}

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