PHP 数组函数 array_udiff_uassoc()

<?php
   function func1($v1,$v2) {
      if ($v1 === $v2) {
         return 0;
      }
      return 1;
   }

   function func2($v1,$v2) {
      if ($v1 === $v2) {
         return 0;
      }
      return 1;
   }
   $input = array("a"=>"orange","b"=>"mango","c"=>"banana");
   $input1 = array("a"=>"orange","b"=>"mango","c"=>"apple");

   print_r(array_udiff_uassoc($input,$input1,"func1", "func2"));
?>