在data文件中写入数据：

 <?php /** * Created by PhpStorm. * User: Administrator * Date: 2015/6/29 * Time: 17:05 */ header("Content-type: text/html; charset=utf-8"); //write data $f = fopen("data","w");//打开文件 fwrite($f,"Hello PHP");//写入数据 fclose($f);//关闭文件 echo "OK"; //windows环境暂时不考虑权限问题

写入成功后可以在页面看到“OK”

接下来读取data文件里的数据

<?php/** * Created by PhpStorm. * User: Administrator * Date: 2015/6/29 * Time: 17:05 */header("Content-type: text/html; charset=utf-8");//read data$f = fopen("data","r");$content = fgets($f);echo $content;fclose($f);

如果有多行数据该怎么读取？

方法一 while：

<?php/** * Created by PhpStorm. * User: Administrator * Date: 2015/6/29 * Time: 17:05 */header("Content-type: text/html; charset=utf-8");$f = fopen("data","r");//读取多行数据 whilewhile(!feof($f)){//feof() 函数检测是否已到达文件末尾  $content = fgets($f);  echo $content;}fclose($f);

方法二 file_get_contents()：

echo file_get_contents("data");

以上所述就是本文的全部内容了，希望大家能够喜欢。