laravel:自动加载自定义类(10.27.0)

<?php
namespace arraystr;
/*
 * 二维数组转字符串
 * */
class ArrayStr {

    //构造函数，初始化
    function __construct() {
    }
    //得到二维数组内容
    function getArrayContent($arr) {
        $final_str = "";
        //遍历
        foreach ($arr as $k => $row) {
            $oneline = "";
            foreach ($row as $kk => $value) {
                $oneline = $oneline . $value . "        ";
            }
            $oneline = $oneline . "\r\n";
            $final_str .=$oneline;
        }
        //返回
        return $final_str;
    }
}

use arraystr\ArrayStr;

class NewsController extends Controller
{
    //得到二维数组内容
    public function arrayContent(){
        $arr = [
            ['name'=>'老刘','age'=>'28'],
            ['name'=>'老王','age'=>'32'],
        ];
        $arrUtil = new ArrayStr();
        $str = $arrUtil->getArrayContent($arr);
        echo $str;
    }