PHP url encryption and decryption function code

$returnUrl = rawurlencode(base64_encode($returnUrl)); //编码 

$returnUrl = parse_str(base64_decode($returnUrl));//解码 或者 
$returnUrl = base64_decode($returnUrl);//解码 

//或者 

//不知道为何, 上面第一种解码方式返回的是null, 求解 
$returnUrl = base64_encode($returnUrl); //编码 
$returnUrl = base64_decode($returnUrl);//解码

This is a way, but it is the safest, because as long as you know this principle, you can unlock it, but your requirements are not high.

If you want to be very safe, you need to use a special encryption class

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