Are there specific PHP functions or techniques that should be used to maintain session integrity and prevent common security vulnerabilities like CSRF attacks?

To maintain session integrity and prevent CSRF attacks in PHP, developers should use techniques like generating and validating CSRF tokens, setting secure session cookie parameters, and implementing proper session management practices. 

// Generate CSRF token
$token = bin2hex(random_bytes(32));
$_SESSION['csrf_token'] = $token;

// Validate CSRF token
if(isset($_POST['csrf_token']) && hash_equals($_SESSION['csrf_token'], $_POST['csrf_token'])) {
    // CSRF token is valid
    // Proceed with the request
} else {
    // Invalid CSRF token
    // Handle the error or reject the request
}

Keywords

session management security vulnerabilities CSRF attacks PHP functions techniques

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