How can using superglobal arrays like $_SESSION improve the security and reliability of PHP code?

Using superglobal arrays like $_SESSION can improve the security and reliability of PHP code by securely storing sensitive information on the server-side rather than in cookies or hidden form fields. This helps prevent data tampering and unauthorized access by users. Additionally, using $_SESSION ensures that data persists across multiple pages and requests, making it a reliable method for storing user-specific information. 

// Start the session to begin using $_SESSION
session_start();

// Store sensitive information in the session
$_SESSION['user_id'] = 123;

// Retrieve the information from the session
$user_id = $_SESSION['user_id'];

Keywords

superglobal arrays $_SESSION security reliability PHP code

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