简单教程
提交运行
代码编辑器：
<?php function myfunction($a,$b) { if ($a===$b) { return 0; } return ($a>$b)?1:-1; } $a1 = array("a"=>"red","b"=>"green","c"=>"blue"); $a2 = array("a"=>"red","b"=>"blue","c"=>"green"); $result = array_udiff_assoc($a1,$a2,"myfunction"); print_r($result);
运行结果：