Home > Backend Development > PHP Tutorial > PHP读取文件内容的五种方式_PHP

PHP读取文件内容的五种方式_PHP

WBOY
Release: 2016-05-28 11:49:58
Original
918 people have browsed it

php读取文件内容的五种方式

分享下php读取文件内容的五种方法:好吧,写完后发现文件全部没有关闭。实际应用当中,请注意关闭 fclose($fp);
--

php读取文件内容:

-----第一种方法-----fread()--------

<&#63;php
$file_path = "test.txt";
if(file_exists($file_path)){
$fp = fopen($file_path,"r");
$str = fread($fp,filesize($file_path));//指定读取大小,这里把整个文件内容读取出来
echo $str = str_replace("\r\n","<br />",$str);
}
&#63;>

Copy after login

--------第二种方法------------

<&#63;php
$file_path = "test.txt";
if(file_exists($file_path)){
$str = file_get_contents($file_path);//将整个文件内容读入到一个字符串中
$str = str_replace("\r\n","<br />",$str);
echo $str;
}
&#63;>
Copy after login

-----第三种方法------------

<&#63;php
$file_path = "test.txt";
if(file_exists($file_path)){
$fp = fopen($file_path,"r");
$str = "";
$buffer = 1024;//每次读取 1024 字节
while(!feof($fp)){//循环读取,直至读取完整个文件
$str .= fread($fp,$buffer);
} 
$str = str_replace("\r\n","<br />",$str);
echo $str;
}
&#63;>
Copy after login

-------第四种方法--------------

<&#63;php
$file_path = "test.txt";
if(file_exists($file_path)){
$file_arr = file($file_path);
for($i=0;$i<count($file_arr);$i++){//逐行读取文件内容
echo $file_arr[$i]."<br />";
}
/*
foreach($file_arr as $value){
echo $value."<br />";
}*/
}
&#63;>
Copy after login

----第五种方法--------------------

<&#63;php
$file_path = "test.txt";
if(file_exists($file_path)){
$fp = fopen($file_path,"r");
$str ="";
while(!feof($fp)){
$str .= fgets($fp);//逐行读取。如果fgets不写length参数,默认是读取1k。
}
$str = str_replace("\r\n","<br />",$str);
echo $str;
}
&#63;>
Copy after login

以上内容给大家分享了PHP读取文件内容的五种方式,希望大家喜欢。

Related labels:
source:php.cn
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template