PHP文件操作方法匯總

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

寫入成功後可以在頁面看到“OK”

接下來讀取data文件裡的數據

<?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麼讀取？

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。