How to hide php parameters

How to hide parameters in php: 1. Use the POST method to pass parameters and pass the parameters to the server as the body of the request. The parameters will not be visible on the URL; 2. Use SESSION to store parameters and store parameter values. In SESSION; 3. Use encryption and decryption to convert the parameter value into an unreadable form; 4. Use a hash algorithm to convert the parameter value into a fixed-length hash value.

The operating environment of this tutorial: windows10 system, php8.1.3 version, DELL G3 computer.

PHP is a popular server-side programming language that is widely used to develop web applications. In PHP, we can pass parameters to the script in various ways, including through URL query strings, POST requests, COOKIE, etc. However, in some cases we wish to hide parameters to increase security and protect user privacy. This article will introduce some common methods to hide PHP parameters.

1. Use the POST method to pass parameters

Using the POST method to pass parameters is a common way to hide parameters. Unlike the GET method, the POST method passes parameters to the server as the body of the request rather than as part of the URL. This way the parameters will not be visible on the URL, increasing the security of the parameters.

For example, we can use a form in HTML to send a POST request:

In the above example, we add a hidden field named "secret" to the form and add Its value is set to "hidden_value". When the user clicks the submit button, the form data will be sent to the "process.php" script.

In the "process.php" script, we can access the value of the hidden parameter by using PHP's $_POST global variable:

$secret=$_POST['secret'];

2. Use SESSION to store parameters

Another way to hide PHP parameters is to use the SESSION mechanism. SESSION is a technology that stores data on the server for subsequent access. By storing parameter values ​​in a SESSION, we can access and use parameters throughout the session without exposing them to the user.

First, we need to enable SESSION in the script:

session_start();

Then, we can store the parameter value in SESSION:

$_SESSION['secret']='hidden_value';

In other scripts, we can pass Access the $_SESSION global variable to get hidden parameter values:

$secret=$_SESSION['secret'];

It should be noted that in order to use SESSION to store parameters, the session_start() function call must be included in each script.

3. Use encryption and decryption

In addition to using the POST method and SESSION, we can also use encryption and decryption technology to hide PHP parameters. By encrypting parameters, we can convert parameter values ​​into an unreadable form to prevent others from obtaining sensitive information.

For example, we can use an encryption algorithm such as AES or RSA to encrypt the parameter value, and then pass the encrypted value to the server. On the server side, we can use the same key and algorithm to decrypt the encrypted value and get the original parameter value.

//加密参数
$secret='hidden_value';
$encrypted=openssl_encrypt($secret,'AES-128-ECB','mysecretkey');
//解密参数
$decrypted=openssl_decrypt($encrypted,'AES-128-ECB','mysecretkey');

It should be noted that in order to use encryption and decryption technology, we need to ensure that both the server and the client have the same key and algorithm.

4. Use hash algorithm

In some cases, we may not need to pass the parameter value to the server, but only need to verify or compare the parameter . In this case, we can use a hashing algorithm, convert the parameter value into a fixed-length hash value, and pass the hash value to the server.

//哈希参数
$secret='hidden_value';
$hashed=hash('sha256',$secret);

On the server side, we can perform the same hashing algorithm on the received parameter value and compare the result with the hash value.

$received_secret=$_POST['secret'];
if(hash('sha256',$received_secret)==$hashed){
//参数验证通过
}else{
//参数验证失败
}

Summary

By using POST method, SESSION, encryption and decryption, hash algorithm and other methods, we can effectively hide PHP parameters and improve security and protection User privacy. However, it is necessary to select the appropriate method according to the specific application scenario and ensure the security of data transmission and storage during the implementation process.

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