what: why: how: //定义一个数组 $array = array(0 => "a", 1 => "b", 2 => "c", 3 => "d"); //使用 array_search("要搜索的值",数组); $key = array_search("b", $array); // $key = 1; $key = array_search("a", $array); // $key = 0; 打赏感谢支持与鼓励~