Three ways to get web content in php

This article introduces three methods of obtaining web content in PHP. Friends in need can refer to it.

Use php code to implement the principle of obtaining web pages: The content will be crawled and filtered through regular expressions to get the desired content.

Programmer Home has introduced a lot about regular expressions, you can refer to them for reference.

php gets content, method 1, file_get_contents

<?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; 
?>

Get web content with php, method 2, curl

<?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, $timeout); 
//在需要用户检测的网页里需要增加下面两行 
//curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_ANY); 
//curl_setopt($ch, CURLOPT_USERPWD, US_NAME.":".US_PWD); 
$contents = curl_exec($ch); 
curl_close($ch); 
echo $contents; 
?>

php gets web page content, method 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; 
?>

Note: 1. Allow_url_fopen must be turned on when using file_get_contents() and fopen(). method: Edit php.ini and set allow_url_fopen = On. When allow_url_fopen is turned off, neither the fopen() nor file_get_contents() functions can open remote files.

2. When using curl(), curl must be enabled in space. method: Under Windows, modify php.ini, remove the semicolon in front of extension=php_curl.dll, and then copy ssleay32.dll and libeay32.dll to C:WINDOWSsystem32; Under Linux, just install the curl extension.