Question

I have a 2d array

$list['1'][] ='23';
$list['1'][] ='24';
$list['1'][] ='25';
$list['1'][] ='26';

And a 1d array

$items={"23","24","36"};

following is right syntax for 1d array.

$items=array("23","24","36");

I want to check whether the $List[‘1’] values are inside the $items are not, if the items are not then store them into a new array

I tried

$different['1'][] = array_diff($items,$list['1']);

but if there are no difference it creates an array with key but empty value

$different[‘1]

['1'] => Array
    (
        [0] => 
    )

Answer 1

if($diff = array_diff($items,$list['1])){
     $different['1'][] = $diff;
}

This should do the trick