019.CI4框架CodeIgniter辅助函数类之：Array数组查询

<?php namespace App\Controllers;

class Hello extends BaseController
{
    //http://127.0.0.1/CI4/public/
    //http://127.0.0.1/CI4/public/index.php/hello
    //http://127.0.0.1/CI4/public/index.php/hello/hello

    protected $helpers = [‘array‘, ‘App\Helpers\Tx‘];

    function __construct()
    {
    }

    public function hello()
    {
        $data = [
            ‘班级‘ => [
                ‘一班‘ => [
                    ‘姓名‘ => ‘张三‘
                ],
                ‘二班‘ => [
                    ‘姓名‘ => ‘李四‘
                ]
            ]
        ];
        $rst = dot_array_search(‘*.*.姓名‘, $data);
        ShowMessage($rst);
    }

    public function index()
    {
        echo ‘青青子衿悠悠我心‘;
    }
    //--------------------------------------------------------------------
}