PHP 数组函数 array_intersect_uassoc()

<?php
   $input1 = array("a" => "green", "b" => "brown", "c" => "blue", "red");
   $input2 = array("a" => "GREEN", "B" => "brown", "yellow", "RED");

   $result = array_intersect_uassoc($input1, $input2, "strcasecmp");
   print_r($result);
?>