一个php的爬虫，将笔趣阁的书可以都下载下来。

数据库：book 表id   

--
-- 数据库: `book`
--

-- --------------------------------------------------------

--
-- 表的结构 `id`
--

CREATE TABLE IF NOT EXISTS `id` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`name` varchar(126) NOT NULL,
`txt` varchar(126) NOT NULL,
PRIMARY KEY (`id`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8 AUTO_INCREMENT=3 ;

文件

<?php
header("Content-type: text/html; charset=utf-8");
$con = mysql_connect("localhost","root","root");
if (!$con)
{
die('Could not connect: ' . mysql_error());
}

mysql_select_db("book", $con);

$title=array();
$book=array();
$key=0;
$url="http://www.biquge.la";
function gettitle($value)
{
$html=curl_get_contents($value);
preg_match_all("//book/[0-9]{1,7}//i",$html, $match1);

foreach ($match1[0] as $key1 => $value1) {
$ssa=array_search($value1, $GLOBALS["book"]);
if ($ssa===false) {
var_dump($value1);
$GLOBALS["book"][]=$value1;
$url_book=$GLOBALS["url"].$value1;
file_put_contents("book.txt", $GLOBALS["url"].$value1.PHP_EOL,FILE_APPEND);
$html_book=curl_get_contents($url_book);
$url_book_array=explode("/", $url_book);
$count_book_num=count($url_book_array);
$book_num=$url_book_array[$count_book_num-2];
$html_book=mb_convert_encoding($html_book, "UTF-8", "GBK");
//var_dump($html);
preg_match_all("/<dd>.*</dd>/i", $html_book, $match_book);
preg_match_all("/<title>.*</title>/i", $html_book, $match_book_title_array);
$match_book_title=preg_replace("/<title>/", "", $match_book_title_array[0][0]);
$match_book_title=preg_replace("/</title>/", "", $match_book_title);
$match_book_title_arrayone=explode("_", $match_book_title);
var_dump($match_book_title_arrayone[0]);
mysql_query("INSERT INTO `id` (
`id` ,
`name` ,
`txt`
)
VALUES (NULL , '".$match_book_title_arrayone[0]."', '".$book_num.".txt"."')");
foreach ($match_book[0] as $key_book_list => $value_book_list) {
$chapter_array=explode(""", $value_book_list);
foreach ($chapter_array as $key_chapter => $value_chapter) {
if (preg_match("/[0-9]{1,9}.html/", $value_chapter)) {
$html_chapter=curl_get_contents($url_book.$value_chapter);
$html_chapter=mb_convert_encoding($html_chapter, "UTF-8", "GBK");
//var_dump($html);
preg_match_all("/<div , $html_chapter, $match_title);
var_dump($match_title);
$value_content= $match_title[0][0].PHP_EOL.$match_chapter[0][0];

$value_content=str_replace("<br />", PHP_EOL, $value_content);

$value_content=str_replace("&nbsp;", " ", $value_content);

$value_content=preg_replace("/<script>.*</script>/", "", $value_content);

$value_content=preg_replace("/<title>/", "", $value_content);
$value_content=preg_replace("/</title>/", "", $value_content);
$value_content=preg_replace("/<.*>/", "", $value_content);
file_put_contents("book/".$book_num.".txt",$value_content.PHP_EOL,FILE_APPEND);
}
}
}
}
}
preg_match_all("/http://www.biquge.la/[a-z]{8,20}//i", $html, $match);
echo $GLOBALS["key"];
$GLOBALS["key"]++;
//var_dump($match);
while(list($key,$value) = each($match[0])){
$ss=array_search($value, $GLOBALS["title"]);
if ($ss===false) {
var_dump($value);
$GLOBALS["title"][]=$value;
file_put_contents("title.txt", $value.PHP_EOL,FILE_APPEND);
gettitle($value);
}
}
}
function curl_get_contents($url) {
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_TIMEOUT, 1000);
curl_setopt($ch, CURLOPT_USERAGENT, "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/42.0.2311.135 Safari/537.36");
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
if (defined('CURLOPT_IPRESOLVE') && defined('CURL_IPRESOLVE_V4')) {
curl_setopt($ch, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_V4);
}
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
$r = curl_exec($ch);
curl_close($ch);
return $r;
}
gettitle($url);
mysql_close($con);
?>