How can the use of $_REQUEST instead of $_POST and $_GET in PHP code lead to potential issues with data handling and security?

Using $_REQUEST instead of $_POST and $_GET in PHP code can lead to potential security vulnerabilities as it combines data from both GET and POST requests, making it easier for attackers to manipulate the input. To solve this issue, it is recommended to use $_POST for data sent via POST requests and $_GET for data sent via GET requests to ensure proper data handling and security. 

// Use $_POST for data sent via POST requests
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    // Handle POST data securely
    $username = $_POST["username"];
    $password = $_POST["password"];
}

// Use $_GET for data sent via GET requests
if ($_SERVER["REQUEST_METHOD"] == "GET") {
    // Handle GET data securely
    $id = $_GET["id"];
}

Keywords

$_REQUEST $_POST $_GET data handling security

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