结合服务器的定时任务可以定时查找关键词广告的竞争程度
php代码
<?php
$fp = @fopen("semallurl.txt", "a+");
$kws1="上海酒店,北京酒店,广州酒店,天津酒店,广州酒店";
$kws=explode(",",$kws1);
foreach ($kws as $kw){
$keywords=$kw;
$enkeywords=urlencode($keywords);
$pageurl="http://www.baidu.com/s?word=$enkeywords";
$contents=fetch($pageurl); /*抓取页面*/
$contents=preg_replace ('/<script[^>]*?>.*?<\/script>/' , "", $contents); /*去掉js代码*/
$contents_left="";
$contents_right="";
$ads_left_green="";
$ads_left_white="";
$contentsbytwoside="";
$ads_right="";/*变量初始化*/
$contentsbytwoside=explode('<div id="content_',$contents);
$contents_right=$contentsbytwoside[1];
$contents_right='<div id="content_'.$contents_right;/*搜索结果右边部分*/
$contents_left=$contentsbytwoside[2];
$contents_left='<div id="content_'.$contents_left;/*搜索结果左边部分*/
preg_match_all('/(<div id=\"[0-9]*\" class=\"ec_pp_f ec_pp_top.*?)<a href=\"http:\/\/e\.baidu\.com\//',$contents_left,$ads_left_white);
preg_match_all('/(<table class=\"ec_mr15 ec_ppim_top ec_pp_f.*?<\/table>)/',$contents_left,$ads_left_green);
preg_match_all('(<div id=\"bdfs[^>]*class=\"ec_im ec_fr ec_pp ec_idea1017 \">.*?<a class=\"ec_bl ec_desc\".*?<\/a>)',$contents_right,$ads_right);
echo "------------keywords ads for".$kw."start ------------------------------------<br>" ;
fwrite($fp, "----------".$kw . " ads start------------------------- \r\n");
echo "left ads with green background is<br>";
/*print_r($ads_left_green[0]);*/
foreach ($ads_left_green[0] as $tg1)
{
preg_match('/<span>.*?<\/span>/' , $tg1,$tg11);
fwrite($fp,strip_tags($tg11[0]) . "\r\n");
echo $tg11[0]."<br>";
};
echo "<p>-------------<br>" ;
echo "left ads with white background is<br>";
/*print_r($ads_left_white[0]);*/
foreach ($ads_left_white[0] as $tg2)
{
preg_match('/<span class=\"ec_url\">.*?<\/span>/' , $tg2,$tg22);
fwrite($fp,strip_tags($tg22[0]) . "\r\n");
echo $tg22[0]."<br>";
};
echo "<p>-------------<br>" ;
echo "right ads with is<br>";
/*print_r($ads_right[0]);*/
foreach ($ads_right[0] as $tg3)
{
preg_match('/(<font size=\"-1\" class=\"ec_url\">.*?<\/font>)/' , $tg3,$tg33);
fwrite($fp,strip_tags($tg33[0]) . "\r\n");
echo $tg33[0]."<br>";
};
echo "---------------keywords ads for".$kw."end ------------------------------------<br>" ;
fwrite($fp, "----------".$kw . " ads end------------------------- \r\n");
};
fwrite($fp, date("y-m-d h:i:s") . " php代码自动运行！\r\n");
fclose($fp);
function fetch($date){
$ch = curl_init();
$timeout = 5;
curl_setopt ($ch, curlopt_url, "$date");
curl_setopt ($ch, curlopt_returntransfer, 1);
curl_setopt ($ch, curlopt_useragent, "mozilla/4.0 (compatible; msie 6.0; windows nt 5.1; sv1)");
curl_setopt ($ch, curlopt_connecttimeout, $timeout);
$contents = curl_exec($ch);
curl_close($ch);
return $contents;
}
?>