<?php

/**

 * Created by PhpStorm.

 * User: leifeng

 * Date: 2018/8/8

 * Time: 15:52

 */

 //自动创建test文件

$document_root = $_SERVER['DOCUMENT_ROOT'];

echo $document_root.'<br>';

$fp = fopen("$document_root/test.txt",'wb');

$str = "this is a test file.\r\n";

fwrite($fp,$str,strlen($str));

fclose($fp);

$fp = fopen("$document_root/test.txt",'rb');

while (!feof($fp)){

    $order = fgets($fp);//读取一行

    echo "$order";

}

fclose($fp);