<?php
    $str = "这里记录着我的过去和将来";    //要测试用的文本
    $key = "key:111";    //秘钥
    $cipher = MCRYPT_DES;    //密码类型
    $modes = MCRYPT_MODE_ECB;    //密码模式
    //初始化向量
    $iv = mcrypt_create_iv(mcrypt_get_iv_size($cipher,$modes),MCRYPT_RAND);
    echo "加密前：".$str."<p>";
    //加密：
    $str_encrypt = mcrypt_encrypt($cipher,$key,$str,$modes,$iv);
    echo "加密后：".$str_encrypt." <p>";
    //解密
    $str_decrypt = mcrypt_decrypt($cipher,$key,$str_encrypt,$modes,$iv);
    echo "还原：".$str_decrypt;
?>