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小编给大家分享一下PHP中CURL采集百度搜寻结果图片不显示怎么办,相信大部分人都还不怎么了解,因此分享这篇文章给大家参考一下,希望大家阅读完这篇文章后大有收获,下面让我们一起去了解一下吧!
1.根据关键字采集百度搜寻结果
根据关键字采集百度搜寻结果,可以使用curl实现,代码如下:
<?php function doCurl($url, $data=array(), $header=array(), $timeout=30){ $ch = curl_init(); curl_setopt($ch, CURLOPT_URL, $url); curl_setopt($ch, CURLOPT_HTTPHEADER, $header); curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true); curl_setopt($ch, CURLOPT_TIMEOUT, $timeout); $response = curl_exec($ch); if($error=curl_error($ch)){ die($error); } curl_close($ch); return $response; } $wd = '仙剑奇侠传'; $url = 'http://www.baidu.com/s?wd='.urlencode($wd); $data = array(); $header = array(); $response = doCurl($url, $data, $header, 5); echo $response; ?>
输出后发现有部分图片不能显示
2.采集后的图片不显示原因分析
直接在百度中搜寻,页面是可以显示图片的。使用firebug查看图片路径,发现采集的图片域名与在百度搜寻的图片域名不同。
采集返回的图片域名 t11.baidu.com
正常搜寻的图片域名 ss1.baidu.com
查看采集与正常搜寻的html,发现有个域名转换的js是不一样的
采集
var list = { "graph.baidu.com": "http://graph.baidu.com", "t1.baidu.com":"http://t1.baidu.com", "t2.baidu.com":"http://t2.baidu.com", "t3.baidu.com":"http://t3.baidu.com", "t10.baidu.com":"http://t10.baidu.com", "t11.baidu.com":"http://t11.baidu.com", "t12.baidu.com":"http://t12.baidu.com", "i7.baidu.com":"http://i7.baidu.com", "i8.baidu.com":"http://i8.baidu.com", "i9.baidu.com":"http://i9.baidu.com", };
正常搜寻
var list = { "graph.baidu.com": "https://sp0.baidu.com/-aYHfD0a2gU2pMbgoY3K", "t1.baidu.com":"https://ss0.baidu.com/6ON1bjeh2BF3odCf", "t2.baidu.com":"https://ss1.baidu.com/6OZ1bjeh2BF3odCf", "t3.baidu.com":"https://ss2.baidu.com/6OV1bjeh2BF3odCf", "t10.baidu.com":"https://ss0.baidu.com/6ONWsjip0QIZ8tyhnq", "t11.baidu.com":"https://ss1.baidu.com/6ONXsjip0QIZ8tyhnq", "t12.baidu.com":"https://ss2.baidu.com/6ONYsjip0QIZ8tyhnq", "i7.baidu.com":"https://ss0.baidu.com/73F1bjeh2BF3odCf", "i8.baidu.com":"https://ss0.baidu.com/73x1bjeh2BF3odCf", "i9.baidu.com":"https://ss0.baidu.com/73t1bjeh2BF3odCf", };
因此可以断定是,百度根据来源地址、IP、header等参数,判断如果是采集的,则返回不同的js。
3.采集后图片不显示的解决方法
把采集到的html,根据定义的域名做一次批量转换即可。
<?php function doCurl($url, $data=array(), $header=array(), $timeout=30){ $ch = curl_init(); curl_setopt($ch, CURLOPT_URL, $url); curl_setopt($ch, CURLOPT_HTTPHEADER, $header); curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true); curl_setopt($ch, CURLOPT_TIMEOUT, $timeout); $response = curl_exec($ch); if($error=curl_error($ch)){ die($error); } curl_close($ch); return $response; } // 域名转换 function cdomain($str){ $baidu_domain = '{ "http://graph.baidu.com": "https://sp0.baidu.com/-aYHfD0a2gU2pMbgoY3K", "http://p.qiao.baidu.com":"https://sp0.baidu.com/5PoXdTebKgQFm2e88IuM_a", "http://vse.baidu.com":"https://sp3.baidu.com/6qUDsjip0QIZ8tyhnq", "http://hdpreload.baidu.com":"https://sp3.baidu.com/7LAWfjuc_wUI8t7jm9iCKT-xh_", "http://lcr.open.baidu.com":"https://sp2.baidu.com/8LUYsjW91Qh4otqbppnN2DJv", "http://kankan.baidu.com":"https://sp3.baidu.com/7bM1dzeaKgQFm2e88IuM_a", "http://xapp.baidu.com":"https://sp2.baidu.com/yLMWfHSm2Q5IlBGlnYG", "http://dr.dh.baidu.com":"https://sp0.baidu.com/-KZ1aD0a2gU2pMbgoY3K", "http://xiaodu.baidu.com":"https://sp0.baidu.com/yLsHczq6KgQFm2e88IuM_a", "http://sensearch.baidu.com":"https://sp1.baidu.com/5b11fzupBgM18t7jm9iCKT-xh_", "http://s1.bdstatic.com":"https://ss1.bdstatic.com/5eN1bjq8AAUYm2zgoY3K", "http://olime.baidu.com":"https://sp0.baidu.com/8bg4cTva2gU2pMbgoY3K", "http://app.baidu.com":"https://sp2.baidu.com/9_QWsjip0QIZ8tyhnq", "http://i.baidu.com":"https://sp0.baidu.com/74oIbT3kAMgDnd_", "http://c.baidu.com":"https://sp0.baidu.com/9foIbT3kAMgDnd_", "http://sclick.baidu.com":"https://sp0.baidu.com/5bU_dTmfKgQFm2e88IuM_a", "http://nsclick.baidu.com":"https://sp1.baidu.com/8qUJcD3n0sgCo2Kml5_Y_D3", "http://sestat.baidu.com":"https://sp1.baidu.com/5b1ZeDe5KgQFm2e88IuM_a", "http://eclick.baidu.com":"https://sp3.baidu.com/-0U_dTmfKgQFm2e88IuM_a", "http://api.map.baidu.com":"https://sp2.baidu.com/9_Q4sjOpB1gCo2Kml5_Y_D3", "http://ecma.bdimg.com":"https://ss1.bdstatic.com/-0U0bXSm1A5BphGlnYG", "http://ecmb.bdimg.com":"https://ss0.bdstatic.com/-0U0bnSm1A5BphGlnYG", "http://t1.baidu.com":"https://ss0.baidu.com/6ON1bjeh2BF3odCf", "http://t2.baidu.com":"https://ss1.baidu.com/6OZ1bjeh2BF3odCf", "http://t3.baidu.com":"https://ss2.baidu.com/6OV1bjeh2BF3odCf", "http://t10.baidu.com":"https://ss0.baidu.com/6ONWsjip0QIZ8tyhnq", "http://t11.baidu.com":"https://ss1.baidu.com/6ONXsjip0QIZ8tyhnq", "http://t12.baidu.com":"https://ss2.baidu.com/6ONYsjip0QIZ8tyhnq", "http://i7.baidu.com":"https://ss0.baidu.com/73F1bjeh2BF3odCf", "http://i8.baidu.com":"https://ss0.baidu.com/73x1bjeh2BF3odCf", "http://i9.baidu.com":"https://ss0.baidu.com/73t1bjeh2BF3odCf", "http://b1.bdstatic.com":"https://ss0.bdstatic.com/9uN1bjq8AAUYm2zgoY3K", "http://ss.bdimg.com":"https://ss1.bdstatic.com/5aV1bjqh_Q23odCf", "http://opendata.baidu.com":"https://sp0.baidu.com/8aQDcjqpAAV3otqbppnN2DJv", "http://api.open.baidu.com":"https://sp0.baidu.com/9_Q4sjW91Qh4otqbppnN2DJv", "http://tag.baidu.com":"https://sp1.baidu.com/6LMFsjip0QIZ8tyhnq", "http://f3.baidu.com":"https://sp2.baidu.com/-uV1bjeh2BF3odCf", "http://s.share.baidu.com":"https://sp0.baidu.com/5foZdDe71MgCo2Kml5_Y_D3", "http://bdimg.share.baidu.com":"https://ss1.baidu.com/9rA4cT8aBw9FktbgoI7O1ygwehsv", "http://1.su.bdimg.com":"https://ss0.bdstatic.com/k4oZeXSm1A5BphGlnYG", "http://2.su.bdimg.com":"https://ss1.bdstatic.com/kvoZeXSm1A5BphGlnYG", "http://3.su.bdimg.com":"https://ss2.bdstatic.com/kfoZeXSm1A5BphGlnYG", "http://4.su.bdimg.com":"https://ss3.bdstatic.com/lPoZeXSm1A5BphGlnYG", "http://5.su.bdimg.com":"https://ss0.bdstatic.com/l4oZeXSm1A5BphGlnYG", "http://6.su.bdimg.com":"https://ss1.bdstatic.com/lvoZeXSm1A5BphGlnYG", "http://7.su.bdimg.com":"https://ss2.bdstatic.com/lfoZeXSm1A5BphGlnYG", "http://8.su.bdimg.com":"https://ss3.bdstatic.com/iPoZeXSm1A5BphGlnYG" }'; $domain = json_decode($baidu_domain, true); foreach($domain as $k=>$v){ $str = str_replace($k, $v, $str); } return $str; } $wd = '仙剑奇侠传'; $url = 'http://www.baidu.com/s?wd='.urlencode($wd); $data = array(); $header = array(); $response = doCurl($url, $data, $header, 5); echo cdomain($response); // 调用域名转换 ?>
增加域名转换后,所有的图片都可以正常显示。
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