php check if an array only contains element values of another array

Question

I want to check if an array only contains allowed element values (are available in another array).

Example:

$allowedElements = array(\'apple\', \'ora         


        

Answer 1

You can use array_intersect() as suggested here. Here's a little function:

function CheckFunction($myArr, $allowedElements) 
{
    $check = count(array_intersect($myArr, $allowedElements)) == count($myArr);

    if($check) {
        return "Input array contains only allowed elements";
    } else {
        return "Input array contains invalid elements";
    }
}

Demo!