How can PHP developers ensure that sensitive files like back.php are not accessible without proper authentication to prevent security breaches?

PHP developers can ensure that sensitive files like back.php are not accessible without proper authentication by using PHP authentication mechanisms such as sessions or login systems. By checking if the user is authenticated before allowing access to the file, developers can prevent unauthorized users from accessing sensitive files and potentially causing security breaches. 

<?php
session_start();

if (!isset($_SESSION['authenticated']) || $_SESSION['authenticated'] !== true) {
    header('HTTP/1.1 401 Unauthorized');
    exit();
}

// Your sensitive file code here
?>

Keywords

PHP authentication security sensitive files access control

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