What are the differences between using $_REQUEST and $_POST in PHP when handling form data?

When handling form data in PHP, it is generally recommended to use $_POST over $_REQUEST. This is because $_POST is specifically designed for handling form data submitted using the POST method, making the code more secure and predictable. $_REQUEST, on the other hand, can also include data submitted via GET and COOKIE methods, potentially leading to security vulnerabilities. 

// Using $_POST to handle form data
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    $username = $_POST["username"];
    $password = $_POST["password"];
    // Process the form data
}

Keywords

$_REQUEST $_POST form data handling differences

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