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<?php function token($length = 32) { // Create random token $string = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789'; $max = strlen($string) - 1; $token = ''; for ($i = 0; $i < $length; $i++) { $token .= $string[mt_rand(0, $max)]; } return $token; } /** * Backwards support for timing safe hash string comparisons * * http://php.net/manual/en/function.hash-equals.php */ if(!function_exists('hash_equals')) { function hash_equals($known_string, $user_string) { $known_string = (string)$known_string; $user_string = (string)$user_string; if(strlen($known_string) != strlen($user_string)) { return false; } else { $res = $known_string ^ $user_string; $ret = 0; for($i = strlen($res) - 1; $i >= 0; $i--) $ret |= ord($res[$i]); return !$ret; } } }