<?php

$array1 = array("x" => "green", "red", "blue", "red");
$array2 = array("x" => "green", "red", "blue", "red");

if(identical_values( $array1 , $array2 )){
echo "arrays are equal";
}else{
echo "arrays are different";
}

function identical_values( $arrayA , $arrayB ) {
    sort( $arrayA );
    sort( $arrayB );
    return $arrayA === $arrayB;
}