简单教程
提交运行
代码编辑器：
<?php $a1 = array("a"=>"red","b"=>"green","c"=>"blue","d"=>"yellow"); $a2 = array("e"=>"red","f"=>"black","g"=>"purple"); $a3 = array("a"=>"red","b"=>"black","h"=>"yellow"); $result = array_diff($a1,$a2,$a3); print_r($result);
运行结果：