php 采集书并合成txt格式的实现代码

　　<?php
/**
* @name 采集书.php
* @date Sun Mar 01 22:48:02 CST 2009
* @copyright 马永占(MyZ)
* @author 马永占(MyZ)
* @link
*/
//header(Content-Type:text/html;charset=utf8);
header(Content-Type:text/html;charset=gb2312);
error_reporting(E_ALL);
date_default_timezone_set(Asia/Shanghai);
set_time_limit(0);
function writer($content,$url)
{
$fp = fopen($url, ab);
fwrite($fp, $content);
fclose($fp);
}
$folder = 2; //文件夹
$book_base_url = xxxxxxxxxxxxxxxxxxxxx;
$book_url = yyyyyyyyyyyyy.html;
$main = file_get_contents($book_base_url.$book_url);
preg_match_all(/chapter_.*?\.html/, $main, $pages);
$pages = array_unique($pages[0]);
foreach ($pages as $value) {
writer(file_get_contents($book_base_url.$value), ./.$folder./.$value..txt);
$str = file_get_contents(./.$folder./.$value..txt);
//print_r($str);
preg_match(/(<h1>)(.*?)(<\/h1>)(.*?)(<div id=\contTxt\ class=\contTxt1\>)(.*?)(<\/div>)/s,$str,$arr);
//print_r($arr);die();
$arr[6] = preg_replace(/(<span[^>]+>.*?<a[^>]+>)(.*?)(<\/a><\/span>)/s,$2,preg_replace(/<p><\/p>/,\r\n,$arr[6]));
$result = \r\n------------------------------------------------\r\n------------------------------------------------\r\n------------------------------------------------\r\n----------------.$arr[2].\r\n------------------------------------------------\r\n------------------------------------------------\r\n------------------------------------------------\r\n.$arr[6];
writer($result, ./.$folder./new.txt);
}
?>