PHP之--DES加解密函数 与JAVA兼容（插曲）

<?php  function encrypt($str, $key){    $block = mcrypt_get_block_size('des', 'ecb');        $pad = $block - (strlen($str) % $block);        $str .= str_repeat(chr($pad), $pad);        return mcrypt_encrypt(MCRYPT_DES, $key, $str, MCRYPT_MODE_ECB);}function decrypt($str, $key){    $str = mcrypt_decrypt(MCRYPT_DES, $key, $str, MCRYPT_MODE_ECB);        $block = mcrypt_get_block_size('des', 'ecb');        $pad = ord($str[($len = strlen($str)) - 1]);        return substr($str, 0, strlen($str) - $pad);}?>