A silly question on PHP.

@farahandev

It's called Null Coalescing Operator in PHP. If need to check whether the value is null or not, that time you can use that.

Here is the example-

// Example usage for: Null Coalesce Operator
$action = $_POST['action'] ?? 'default';

// The above is identical to this if/else statement
if (isset($_POST['action'])) {
    $action = $_POST['action'];
} else {
    $action = 'default';
}

Ref: http://us2.php.net/manual/en/language.operators.comparison.php#language.operators.comparison.ternary

ohh. Thanks again man.