Decode

tips:


这是一个php自定义加密函数.
flag的密文：=pJovuTsWOUrtIJZtcKZ2OJMzEJZyMTLdIas,请解密！


encode API


function encode($str){
	$_o = strrev($str);
	for($_0=0;$_0<strlen($_o);$_0++){
		$_c = substr($_o,$_0,1);
		$__ = ord($_c)+1;
		$_c = chr($__);
		$_= $_.$_c;
	}
	return str_rot13(strrev(base64_encode($_)));
}