Write a PHP program to check a given array (length will be atleast 2) of integers and return true if there are two values 15, 15 next to each other

<?php
function test($numbers)
    { 
       for ($i = 0; $i < sizeof($numbers) - 1; $i++)
          {
             if ($numbers[$i + 1] == $numbers[$i] && $numbers[$i] == 15) return true;
          }
       return false;;
    }  
    
var_dump(test([5, 5, 1, 15, 15]));
var_dump(test([15, 2, 3, 4, 15]));
var_dump(test([3, 3, 15, 15, 5, 5]));
var_dump(test([1, 5, 15, 7, 8, 15]));