请教 PHP array_intersect() 函数用法

<?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");


$result=array_intersect($a1,$a2,$a3);

print_r($result);

?>


官方教程里 array_intersect 里手工指定 $a1,$a2,$a3


怎么样动态的向 array_intersect 里面传参数呢