Write a PHP program to check two given arrays of integers of length 1 or more and return true if they have the same first element or they have the same last element

<?php
function test($a1, $a2)
 { 
       return $a1[0] == $a2[0] || $a1[sizeof($a1) - 1] == $a2[sizeof($a2) - 1];
    
 }   

var_dump(test([10, 20, 40, 50], [10, 20, 40, 50]));
var_dump(test([10, 20, 40, 10], [10, 20, 40, 5]));
var_dump(test([12, 24, 35, 55], [1, 20, 40, 5]));