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"=>"black","b"=>"yellow","d"=>"brown"); $a3 = array("e"=>"purple","f"=>"white","a"=>"gold"); $result = array_intersect_ukey($a1,$a2,$a3,"myfunction"); print_r($result);
运行结果：