PHP compare array

Question

Is there anyway to compare arrays in php using an inbuilt function, short of doing some sort of loop?

$a1 = array(1,2,3);
$a2 = array(1,2,3);

if (array_are_         


        

Answer 1

this is a simple way to get the difference:

$array1 = [40,10,30,20,50];
$array2 = [10,30];
$result = array_filter(
                       $array1,
                       function($var) use($array2){
                                if(in_array($var, $array2)){
                                   return $var;
                                }
                         }
             );
print_r($result); //Array ( [0] => 10 [1] => 30 )