PHP获取文件内容的几种方法

1.file_get_contents得到文件的内容

 1 <?php
 2     header("content-type:text/html;charset=utf-8");
 3 
 4     $file_path = 'lock.txt';
 5 
 6     $conn = file_get_contents($file_path);
 7     $conn = str_replace("\r\n", "<br/>", $conn);
 8     echo $conn;
 9     fclose($conn);
10 ?>

2.用fopen+fgets得到文件内容

 1 <?php
 2     header("content-type:text/html;charset=utf-8");
 3 
 4     $file_path = 'lock.txt';
 5 
 6     if(file_exists($file_path)){
 7         if($fp = fopen($file_path,'a+')){
 8             while(!feof($fp)){
 9                 $conn = fgets($fp);
10                 $conn = str_replace("\r\n", "<br/>", $conn);
11                 echo $conn;
12             }
13         }else{
14             echo "文件打不开";
15         }
16     }else{
17         echo "没有这个文件";
18     }
19     fclose($fp);
20 ?>

3.用fopen+fread获得文件内容

 1 <?php
 2     header("content-type:text/html;charset=utf-8");
 3 
 4     $file_path = 'lock.txt';
 5 
 6     if(file_exists($file_path)){
 7         if($fp = fopen($file_path,'a+')){
 8             $conn = fread($fp, filesize($file_path));
 9             $conn = str_replace("\r\n", "<br/>", $conn);
10             echo $conn;
11             }
12         }else{
13             echo "文件打不开";
14         }
15     }else{
16         echo "没有这个文件";
17     }
18     fclose($fp);
19 ?>

4.循环读取获得文件内容

 1 <?php
 2     header("content-type:text/html;charset=utf-8");
 3 
 4     $file_path = 'lock.txt';
 5 
 6     if(file_exists($file_path)){
 7         if($fp = fopen($file_path,'a+')){
 8             $buffer=1024; 
 9             $str=""; 
10             while(!feof($fp)){ 
11             $str.=fread($fp,$buffer); 
12             }
13             $str=str_replace("\r\n","<br>",$str); 
14             echo $str; 
15         }else{
16             echo "文件打不开";
17         }
18     }else{
19         echo "没有这个文件";
20     }
21     fclose($fp);
22 ?>

 

posted @ 2016-01-16 11:55  hell0x  阅读(898)  评论(0)  编辑  收藏  举报