Version 1

[yaffs-website] / vendor / symfony / polyfill-php55 / Php55.php

diff --git a/vendor/symfony/polyfill-php55/Php55.php b/vendor/symfony/polyfill-php55/Php55.php
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+++ b/vendor/symfony/polyfill-php55/Php55.php
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+<?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\Php55;
+
+/**
+ * @internal
+ */
+final class Php55
+{
+    public static function boolval($val)
+    {
+        return (bool) $val;
+    }
+
+    public static function json_last_error_msg()
+    {
+        switch (json_last_error()) {
+            case JSON_ERROR_NONE: return 'No error';
+            case JSON_ERROR_DEPTH: return 'Maximum stack depth exceeded';
+            case JSON_ERROR_STATE_MISMATCH: return 'State mismatch (invalid or malformed JSON)';
+            case JSON_ERROR_CTRL_CHAR: return 'Control character error, possibly incorrectly encoded';
+            case JSON_ERROR_SYNTAX: return 'Syntax error';
+            case JSON_ERROR_UTF8: return 'Malformed UTF-8 characters, possibly incorrectly encoded';
+            default: return 'Unknown error';
+        }
+    }
+
+    /**
+     * @author Sebastiaan Stok <s.stok@rollerscapes.net>
+     */
+    public static function hash_pbkdf2($algorithm, $password, $salt, $iterations, $length = 0, $rawOutput = false)
+    {
+        // Number of blocks needed to create the derived key
+        $blocks = ceil($length / strlen(hash($algorithm, null, true)));
+        $digest = '';
+
+        for ($i = 1; $i <= $blocks; ++$i) {
+            $ib = $block = hash_hmac($algorithm, $salt.pack('N', $i), $password, true);
+
+            // Iterations
+            for ($j = 1; $j < $iterations; ++$j) {
+                $ib ^= ($block = hash_hmac($algorithm, $block, $password, true));
+            }
+
+            $digest .= $ib;
+        }
+
+        if (!$rawOutput) {
+            $digest = bin2hex($digest);
+        }
+
+        return substr($digest, 0, $length);
+    }
+}