how to check multiple $_POST variable for existence using isset()?

Question

I need to check if $_POST variables exist using single statement isset.

if (isset$_POST[\'name\']  &&  isset$_POST[\'number\']  &&am         


        

Answer 1

That you are asking is exactly what is in isset page

isset($_POST['name']) && isset($_POST['number']) && isset($_POST['address'])

is the same as:

isset($_POST['name'], $_POST['number'], $_POST['address'])

If you are asking for a better or practical way to assert this considering that you already have all the required keys then you can use something like:

$requiredKeys = ['name', 'number', 'address'];
$notInPost = array_filter($requiredKeys, function ($key) {
    return ! isset($_POST[$key]);
});

Remember, isset does not return the same result as array_key_exists