这篇文章介绍的内容是关于php抓取百度搜索结果页面的【相关搜索词】并存储，有着一定的参考价值，现在分享给大家，有需要的朋友可以参考一下
一、百度搜索关键词【知了壳公司转让】
【知了壳公司转让】搜索链接
https://www.baidu.com/s?wd=%E7%9F%A5%E4%BA%86%E5%A3%B3%E5%85%AC%E5%8F%B8%E8%BD%AC%E8%AE%A9
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**搜索结果部分源代码** <p id="rs"><p class="tt">相关搜索</p><table cellpadding="0"><tbody><tr><th> <a href="/s?wd=%E5%85%AC%E5%8F%B8%E8%BD%AC%E8%AE%A9%E6%B5%81%E7%A8%8B%E7%9F%A5%E4%BA%86%E5%A3%B3&rsp=0&f=1&oq=%E7%9F%A5%E4%BA%86%E5%A3%B3%E5%85%AC%E5%8F%B8%E8%BD%AC%E8%AE%A9&tn=baiduhome_pg&ie=utf-8&rsv_idx=2&rsv_pq=88c7804a0000c417&rsv_t=b5f3JkJIsj6Nkp61K%2BmmVGeev7UP95o1HSJTUoIS2xV4SsmZxvOoVf%2BAZaVoihB%2BT3bg&rqlang=cn&rsv_ers=xn0&rs_src=0&rsv_pq=88c7804a0000c417&rsv_t=b5f3JkJIsj6Nkp61K%2BmmVGeev7UP95o1HSJTUoIS2xV4SsmZxvOoVf%2BAZaVoihB%2BT3bg">公司转让流程知了壳</a></th> ..... ..... <th><a href="/s?wd=%E7%9F%A5%E4%BA%86%E5%A3%B3%E5%85%AC%E5%8F%B8%E6%B3%A8%E5%86%8C&rsp=8&f=1&oq=%E7%9F%A5%E4%BA%86%E5%A3%B3%E5%85%AC%E5%8F%B8%E8%BD%AC%E8%AE%A9&tn=baiduhome_pg&ie=utf-8&rsv_idx=2&rsv_pq=88c7804a0000c417&rsv_t=b5f3JkJIsj6Nkp61K%2BmmVGeev7UP95o1HSJTUoIS2xV4SsmZxvOoVf%2BAZaVoihB%2BT3bg&rqlang=cn&rsv_ers=xn0&rs_src=0&rsv_pq=88c7804a0000c417&rsv_t=b5f3JkJIsj6Nkp61K%2BmmVGeev7UP95o1HSJTUoIS2xV4SsmZxvOoVf%2BAZaVoihB%2BT3bg">知了壳公司注册</a></th></tr></tbody></table></p>
二、抓取并保存本地
源代码
index.php------------
<form action="index.php" method="post">
<input name="q" type="text" />
<input type="submit" value="Get Keywords" />
</form>
<?php
header('Content-Type:text/html;charset=gbk');
class ComBaike{
private $o_String=NULL;
public function __construct(){
include('cls.StringEx.php');
$this->o_String=new StringEx();
}
public function getItem($word){
$url = "http://www.baidu.com/s?wd=".$word;
// 构造包头，模拟浏览器请求
$header = array (
"Host:www.baidu.com",
"Content-Type:application/x-www-form-urlencoded",//post请求
"Connection: keep-alive",
'Referer:http://www.baidu.com',
'User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0; BIDUBrowser 2.6)'
);
$ch = curl_init ();
curl_setopt ( $ch, CURLOPT_URL, $url );
curl_setopt ( $ch, CURLOPT_HTTPHEADER, $header );
curl_setopt ( $ch, CURLOPT_RETURNTRANSFER, 1 );
$content = curl_exec ( $ch );
if ($content == FALSE) {
echo "error:" . curl_error ( $ch );
}
curl_close ( $ch );
//输出结果echo $content;
$this->o_String->string=$content;
$s_begin='<p id="rs">';
$s_end='</p>';
$summary=$this->o_String->getPart($s_begin,$s_end);
$s_begin='<p class="tt">相关搜索</p><table cellpadding="0"><tr><th>';
$s_end='</th></tr></table></p>';
$content=$this->o_String->getPart($s_begin,$s_end);
return $content;
}
public function __destruct(){
unset($this->o_String);
}
}
if($_POST){
$com = new ComBaike();
$q = $_POST['q'];
$str = $com->getItem($q); //获取搜索内容
$pat = '/<a(.*?)href="(.*?)"(.*?)>(.*?)<\/a>/i';
preg_match_all($pat, $str, $m);
//print_r($m[4]); 链接文字
$con = implode(",", $m[4]);
//生成文件夹
$dates = date("Ymd");
$path="./Search/".$dates."/";
if(!is_dir($path)){
mkdir($path,0777,true);
}
//生成文件
$file = fopen($path.iconv("UTF-8","GBK",$q).".txt",'w');
if(fwrite($file,$con)){
echo $con;
echo '<script>alert("success")</script>';
}else{
echo '<script>alert("error")</script>';
}
fclose($file);
}
?>
cls.StringEx.php-------------
<?php
header('Content-Type: text/html; charset=UTF-8');
class StringEx{
public $string='';
public function __construct($string=''){
$this->string=$string;
}
public function pregGetPart($s_begin,$s_end){
$s_begin==preg_quote($s_begin);
$s_begin=str_replace('/','\/',$s_begin);
$s_end=preg_quote($s_end);
$s_end=str_replace('/','\/',$s_end);
$pattern='/'.$s_begin.'(.*?)'.$s_end.'/';
$result=preg_match($pattern,$this->string,$a_match);
if(!$result){
return $result;
}else{
return isset($a_match[1])?$a_match[1]:'';
}
}
public function strstrGetPart($s_begin,$s_end){
$string=strstr($this->string,$s_begin);
$string=strstr($string,$s_end,true);
$string=str_replace($s_begin,'',$string);
$string=str_replace($s_end,'',$string);
return $string;
}
public function getPart($s_begin,$s_end){
$result=$this->pregGetPart($s_begin,$s_end);
if(!$result){
$result=$this->strstrGetPart($s_begin,$s_end);
}
return $result;
}
}
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