在data文件中寫入數據：

<?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');//打開文件

fwrite($f,'Hello PHP');//寫入數據

fclose($f);//關閉文件

echo 'OK';

//windows環境暫時不考慮權限問題

寫入成功后可以在頁面看到“OK”

接下來讀取data文件里的數據

<?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);

如果有多行數據該怎么讀取？

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');

//讀取多行數據 while

while(!feof($f)){//feof() 函數檢測是否已到達文件末尾

$content = fgets($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內容了，希望大家能夠喜歡。