Four ways to get web content in php

This article introduces four methods to obtain web content using PHP, including xmlhttp method, file_get_contents method, fopen method, and curl method. Friends in need can refer to it.

1. Use xmlhttp object, similar to ActiveXObject object in asp. Code:

<?php
//获取网页内容
$xhr = new COM("MSXML2.XMLHTTP"); 
$xhr->open("GET","http://localhost/xxx.php?id=2",false); 
$xhr->send(); 
echo $xhr->responseText

2, file_get_contents method

<?php
$url = "http://bbs.it-home.org"; 
$contents = file_get_contents($url);

//如果出现中文乱码使用下面代码 
//$getcontent = iconv("gb2312", "utf-8",$contents); 
echo $contents; 
?>

3, fopen->fread->fclose

<?php 
$handle = fopen ("http://bbs.it-home.org", "rb"); 
$contents = ""; 
do { 
$data = fread($handle, 1024); 
if (strlen($data) == 0) { 
break; 
} 
$contents .= $data; 
} while(true); 
fclose ($handle); 
echo $contents; 
?>

4, curl method

<?php 
$url = "http://bbs.it-home.org"; 
$ch = curl_init(); 
$timeout = 5; 
curl_setopt($ch, CURLOPT_URL, $url); 
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); 
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $timeout); 
//需要用户检测的网页中，增加下面两行 
//curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_ANY); 
//curl_setopt($ch, CURLOPT_USERPWD, US_NAME.":".US_PWD); 
$contents = curl_exec($ch); 
curl_close($ch); 
echo $contents; 
?>

Note: 1. When using file_get_contents and fopen, allow_url_fopen must be enabled. Method: Edit php.ini and set allow_url_fopen = On. When allow_url_fopen is turned off, neither fopen nor file_get_contents can open remote files.

2. For the curl method, you need to enable curl. Method: Modify php.ini under Windows, remove the semicolon in front of extension=php_curl.dll, and copy ssleay32.dll and libeay32.dll to C:/WINDOWS/system32; Just install the curl extension under Linux.