php 静态变量如何循环输出？

Question

<?php

    function test()

    {

        static $nm = 1;

        $nm =$nm+1 ;

        echo $nm."<br />";

    }

    

    // 第一次执行，$nm = 2

    test();

    // 第一次执行，$nm = 4

    test();

    // 第一次执行，$nm = 8

    test();

?>

如何能调用方法 循环生成 2 4 6 2 4 6；

Answer 1

<?phpfunction test(){&nbsp; &nbsp; $config = [2, 4, 6];&nbsp; &nbsp;&nbsp;&nbsp; &nbsp; static $i = 0;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp; $result = $config[$i];&nbsp; &nbsp;&nbsp;&nbsp; &nbsp; if ($i >= count($config) - 1) {&nbsp; &nbsp; &nbsp; &nbsp; $i = 0;&nbsp; &nbsp; } else {&nbsp; &nbsp; &nbsp; &nbsp; $i++;&nbsp; &nbsp; }&nbsp; &nbsp;&nbsp;&nbsp; &nbsp; echo $result . '<br />';}test();test();test();test();test();test();