What is the correct way to retrieve the value of a cookie in PHP?

To retrieve the value of a cookie in PHP, you can use the $_COOKIE superglobal array. Simply access the cookie value by specifying the cookie name as the key in the $_COOKIE array. Make sure to sanitize and validate the cookie value before using it in your application to prevent security vulnerabilities. 

// Retrieve the value of a cookie named "example_cookie"
if(isset($_COOKIE['example_cookie'])) {
    $cookie_value = $_COOKIE['example_cookie'];
    // Sanitize and validate the cookie value before using it
    // Example: $sanitized_value = filter_var($cookie_value, FILTER_SANITIZE_STRING);
}

Keywords

PHP cookie $_COOKIE setcookie value

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