<?php
$array1 = array("a" => "verde", "vermelho", "azul");
$array2 = array("b" => "verde", "amarelo", "vermelho");
$result = array_intersect($array1, $array2);
print_r($result);
?>
PD9waHAKJGFycmF5MSA9IGFycmF5KCJhIiA9PiAidmVyZGUiLCAidmVybWVsaG8iLCAiYXp1bCIpOwokYXJyYXkyID0gYXJyYXkoImIiID0+ICJ2ZXJkZSIsICJhbWFyZWxvIiwgInZlcm1lbGhvIik7CiRyZXN1bHQgPSBhcnJheV9pbnRlcnNlY3QoJGFycmF5MSwgJGFycmF5Mik7CnByaW50X3IoJHJlc3VsdCk7Cj8+