求urldecode解密方式，谢谢。

<?$O00OO0=urldecode("%6E1%7A%62%2F%6D%615%5C%76%740%6928%2D%70%78%75%71%79%2A6%6C%72%6B%64%679%5F%65%68%63%73%77%6F4%2B%6637%6A");$O00O0O=$O00OO0{3}.$O00OO0{6}.$O00OO0{33}.$O00OO0{30};$O0OO00=$O00OO0{33}.$O00OO0{10}.$O00OO0{24}.$O00OO0{10}.$O00OO0{24};$OO0O00=$O0OO00{0}.$O00OO0{18}.$O00OO0{3}.$O0OO00{0}.$O0OO00{1}.$O00OO0{24};$OO0000=$O00OO0{7}.$O00OO0{13};$O00O0O.=$O00OO0{22}.$O00OO0{36}.$O00OO0{29}.$O00OO0{26}.$O00OO0{30}.$O00OO0{32}.$O00OO0{35}.$O00OO0{26}.$O00OO0{30};eval($O00O0O("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")); ?>

<?header("Content-type: text/html; charset=utf-8"); if(!file_exists('./data/install.lock')){    header("Location: /install/index.php");    exit;}define('APP_ROOT', str_replace('\\', '/', dirname(__FILE__)));/* 应用名称www.adminn.cn*/define('APP_NAME', 'app');/* 应用目录*/define('APP_PATH', './cmstao/');/* 数据目录*/define('PIN_DATA_PATH', './data/');/* 扩展目录*/define('EXTEND_PATH', APP_PATH . 'Extend/');/* 配置文件目录*/define('CONF_PATH', PIN_DATA_PATH . 'config/');/* 数据目录*/define('RUNTIME_PATH', './_runtime/');/* HTML静态文件目录*///define('HTML_PATH', PIN_DATA_PATH . 'html/');/* DEBUG开关*/define('APP_DEBUG', false);require("./core/ThinkPHP/ThinkPHP.php");?>

/** * 本函数可还原常见代码级扰码(微盾) **/function unscrambler($code) {  if(! is_array($code)) {    $code = str_replace('__FILE__', "'$code'", str_replace('eval', '$code=', file_get_contents($code)));    eval('?>' . $code);  }else {    extract($code);    $code = str_replace("eval", '$code=', $code);    eval($code);  }  if(strstr($code, 'eval')) return unscrambler(get_defined_vars());  else return $code;}//用法//echo unscrambler('待解码的文件名');