Using PHP Method Curl Grab Ajax asynchronous content thinking analysis and code sharing _php example

In fact, grab Ajax asynchronous content of the page and catch the ordinary page is not very different. Ajax simply makes an asynchronous HTTP request, as long as it uses firebug-like tools to find the requested backend service URL and value-passing parameters, and then fetches the URL parameters.

Using Firebug's Network Tools

If you are grabbing a page, the data that is not displayed in the content is a bunch of JS code.

Code

$cookie _file=tempnam ('./temp ', ' Cookie '); $ch = Curl_init (); $url 1 = "http://www.cdut.edu.cn/default.html"; curl_ Setopt ($ch, Curlopt_url, $url 1); curl_setopt ($ch, curlopt_http_version,curl_http_version_1_1); curl_setopt ($ch, curlopt_header,0); curl_setopt ($ch, curlopt_returntransfer,1); curl_setopt ($ch, curlopt_followlocation,1); curl_ Setopt ($ch, curlopt_encoding, ' gzip '); Add gzip parse//Set file curl_setopt ($ch, Curlopt_cookiejar, $cookie _file) to save cookie information after connection ends; $content =curl_exec ($ch); curl_ Close ($ch); $ch 3 = Curl_init (); $url 3 = "Http://www.cdut.edu.cn/xww/dwr/call/plaincall/portalAjax.getNewsXml.dwr"; $ Curlpost = "callcount=1&page=/xww/type/1000020118.html&httpsessionid=12a9b726e6a2d4d3b09de7952b2f282c &scriptsessionid=295315b4b4141b09da888d3a3adb8faa658&c0-scriptname=portalajax&c0-methodname= Getnewsxml&c0-id=0&c0-param0=string:10000201&c0-param1=string:1000020118&c0-param2=string:news _&c0-param3=number:5969&c0-param4=number:1&c0-param5=null:null&c0-param6=null:Null&batchid=0 "; curl_setopt ($ch 3,curlopt_url, $url 3); curl_setopt ($ch 3,curlopt_post,1); curl_setopt ($ch 3, Curlopt_postfields, $curlPost);//Set the file curl_setopt ($ch 3,curlopt_cookiefile, $cookie _file) that holds cookie information after the connection is completed; $content 1=curl_exec ($ch 3); Curl_close ($ch 3);

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