使用php的curl依据关键词爬取百度搜索结果页

<br /><?php<br />$url = "http://www.baidu.com/s?wd=生命动力";<br />// 构造包头，模拟浏览器请求<br />$header = array (<br />		"Host:www.baidu.com",<br />		"Content-Type:application/x-www-form-urlencoded",//post请求<br />		"Connection: keep-alive",<br />		'Referer:http://www.baidu.com',<br />		'User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0; BIDUBrowser 2.6)'<br />);<br />$ch = curl_init ();<br />curl_setopt ( $ch, CURLOPT_URL, $url );<br />curl_setopt ( $ch, CURLOPT_HTTPHEADER, $header );<br />curl_setopt ( $ch, CURLOPT_RETURNTRANSFER, 1 );<br />// 执行<br />$content = curl_exec ( $ch );<br />if ($content == FALSE) {<br />	echo "error:" . curl_error ( $ch );<br />}<br />// 关闭<br />curl_close ( $ch );<br /><br />//输出结果<br />echo $content;<br />?><br />

<br />$url = "http://www.baidu.com/s?wd=生命动力";<br /><br />$header = array (<br />        'User-Agent: Mozilla/5.0 (Windows NT 5.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/33.0.1750.146 Safari/537.36'<br />);<br />$ch = curl_init ();<br />curl_setopt ( $ch, CURLOPT_URL, $url );<br />curl_setopt ( $ch, CURLOPT_HTTPHEADER, $header );<br />curl_setopt ( $ch, CURLOPT_RETURNTRANSFER, 1 );<br />// 执行<br />$content = curl_exec ( $ch );<br />if ($content == FALSE) {<br />    echo "error:" . curl_error ( $ch );<br />}<br />// 关闭<br />curl_close ( $ch );<br /> <br />//输出结果<br />echo $content;<br />