①、使用php 获取网页 内容
http://hi.baidu.com/quqiufeng/blog/item/7e86fb3f40b598c67d1e7150.html
header("Content-type: text/html; charset=utf-8");
1、
$xhr = new COM("MSXML2.XMLHTTP");
$xhr->open("GET","http://localhost/xxx.php?id=2",false);
$xhr->send();
echo $xhr->responseText

2、file_get_contents实现
<?php
$url="http://www.blogjava.net/pts";
echo file_get_contents( $url );
?>

3、fopen()实现
<?
if ($stream = fopen('http://www.sohu.com', 'r')) {
??? // print all the page starting at the offset 10
??? echo stream_get_contents($stream, -1, 10);
??? fclose($stream);
}

if ($stream = fopen('http://www.sohu.net', 'r')) {
??? // print the first 5 bytes
??? echo stream_get_contents($stream, 5);
??? fclose($stream);
}
?>

②、使用php获取网页内容
http://www.blogjava.net/pts/archive/2007/08/26/99188.html
简单的做法:
<?php
$url="http://www.blogjava.net/pts";
echo file_get_contents( $url );
?>
或者:
<?
if ($stream = fopen('http://www.sohu.com', 'r')) {
??? // print all the page starting at the offset 10
??? echo stream_get_contents($stream, -1, 10);
??? fclose($stream);
}

if ($stream = fopen('http://www.sohu.net', 'r')) {
??? // print the first 5 bytes
??? echo stream_get_contents($stream, 5);
??? fclose($stream);
}
?>

③、PHP获取网站内容，保存为TXT文件源码
http://blog.chinaunix.net/u1/44325/showart_348444.html
<?
$my_book_url='http://book.yunxiaoge.com/files/article/html/4/4550/index.html';
ereg("http://book.yunxiaoge.com/files/article/html/[0-9]+/[0-9]+/",$my_book_url,$myBook);
$my_book_txt=$myBook[0];
$file_handle = fopen($my_book_url, "r");//读取文件
unlink("test.txt");
while (!feof($file_handle)) { //循环到文件结束
??? $line = fgets($file_handle); //读取一行文件
??? $line1=ereg("href=\"[0-9]+.html",$line,$reg); //分析文件内部书的文章页面
?????? $handle = fopen("test.txt", 'a');
?? if ($line1) {
???? $my_book_txt_url=$reg[0]; //另外赋值,给抓取分析做准备
?? $my_book_txt_url=str_replace("href=\"","",$my_book_txt_url);
????? $my_book_txt_over_url="$my_book_txt$my_book_txt_url"; //转换为抓取地址
????? echo "$my_book_txt_over_url</p>"; //显示工作状态
????? $file_handle_txt = fopen($my_book_txt_over_url, "r"); //读取转换后的抓取地址
????? while (!feof($file_handle_txt)) {
?????? $line_txt = fgets($file_handle_txt);
?????? $line1=ereg("^&nbsp.+",$line_txt,$reg); //根据抓取内容标示抓取
?????? $my_over_txt=$reg[0];
?????? $my_over_txt=str_replace("&nbsp;&nbsp;&nbsp;&nbsp;","??? ",$my_over_txt); //过滤字符
?????? $my_over_txt=str_replace("<br />","",$my_over_txt);
?????? $my_over_txt=str_replace("<script. language=\"javascript\">","",$my_over_txt);
?????? $my_over_txt=str_replace("&quot;","",$my_over_txt);
?????? if ($line1) {
???????? $handle1=fwrite($handle,"$my_over_txt\n"); //写入文件
?????? }
????? }
??? }
}
fclose($file_handle_txt);
fclose($handle);
fclose($file_handle); //关闭文件
echo "完成</p>";
?>

下面是比较嚣张的方法。
这里使用一个名叫Snoopy 的类。
先是在这里看到的：
PHP中获取网页内容的Snoopy 包
http://blog.declab.com/read.php/27.htm
然后是Snoopy的官网：
http://sourceforge.net/projects/snoopy/
这里有一些简单的说明：
代码收藏-Snoopy 类及简单的使用方法