PHP 数组函数 array_uintersect_assoc()

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

   print_r(array_uintersect_assoc($input1, $input2, "strcasecmp"));
?>