Is it possible for values in static variables to be mixed up between users in PHP?

Yes, it is possible for values in static variables to be mixed up between users in PHP if the static variables are shared across different user sessions. To avoid this issue, you can use session variables to store user-specific data instead of static variables. 

<?php

session_start();

// Store user-specific data in session variables
$_SESSION['user_data'] = 'User-specific data';

// Retrieve user-specific data from session variables
$user_data = $_SESSION['user_data'];

echo $user_data;

?>

Keywords

static variables PHP user mixed up values

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