How to get Baidu keyword ranking on the page how to use PHP to get Baidu keyword ranking to display on the page, instead of using its keyword ranking Query Tool & nbsp; thank you! ------ solution ------------------ use curl to collect Baidu ranking pages, and then use regular expressions to match your desired items. ------ Solution ------------------ use curl to capture data and then perform regular matching: how to obtain Baidu keyword ranking on the page is urgent
How to use PHP to obtain Baidu keyword ranking and display it on the page, instead of using its keyword ranking query tool
Thank you!
------ Solution --------------------
Use curl to collect Baidu ranking pages, and then use regular expressions to match what you want.
------ Solution --------------------
Use curl to capture data and then perform regular matching:
PHP cURL library function introduction: crawling web pages, POST data and other
This article describes how to use the PHP cURL Library. CURL is a powerful PHP library that can be used to obtain webpage content, obtain webpage content, retrieve an XML file, and import it to the database.
Using the PHP cURL library, you can easily and effectively capture webpages. You only need to run a script, analyze the web page you crawled, and then you can get the data you want as a program. Whether you want to retrieve part of the data from a link or an XML file and import it to the database, you may simply get the webpage content, cURL is a powerful PHP library. This article describes how to use this PHP library.
Enable cURL settings
First, we must first determine whether PHP has enabled this library. you can use the php_info () function to obtain this information.
<? Phpphpinfo ();? >
If you can see the following output on the webpage, it indicates that the cURL Library has been enabled.
If you see this, you need to set your PHP and enable this library. If you are on Windows, it is very simple. you need to modify the settings of your php. ini file, find php_curl.dll, and cancel the semicolon comment. As follows:
// Cancel the comment extension = php_curl.dll
If you are in Linux, you need to recompile your PHP. during editing, you need to open the compilation parameter -- add the "-with-curl" parameter to the configure command.
A small example
If everything is ready, the following is a small routine:
<? Php
// Initialize a cURL object
$ Curl = curl_init ();
// Set the URL you want to capture
Curl_setopt ($ curl, CURLOPT_URL, 'http: // cocre.com ');
// Set the header
Curl_setopt ($ curl, CURLOPT_HEADER, 1 );
// Set the cURL parameter to save the result to the string or output to the screen.
Curl_setopt ($ curl, CURLOPT_RETURNTRANSFER, 1 );
// Run cURL to request the webpage
$ Data = curl_exec ($ curl );
// Close the URL request
Curl_close ($ curl );
// Display the obtained data
Var_dump ($ data );
How to POST data
The above is the code for capturing web pages, and the following is to POST data to a web page. Suppose we have a form processing URL http://www.example.com/sendsms.php, which can accept two single table domain, one is the phone number, and the other is the SMS content.
<? Php $ phoneNumber = '000000'; $ message = 'This message was generated by curl and php'; $ curlPost = 'pnumber = '. urlencode ($ phoneNumber ). '& MESSAGE = '. urlencode ($ message ). '& SUBMIT = send'; $ ch = curl_init (); curl_setopt ($ ch, CURLOPT_URL, 'http: // www.example.com/sendSMS.php'); curl_setopt ($ ch, CURLOPT_HEADER, 1 ); curl_setopt ($ ch, CURLOPT_RETURNTRANSFER, 1); curl_setopt ($ ch, CURLOPT_POST, 1); curl_setopt ($ Ch, CURLOPT_POSTFIELDS, $ curlPost); $ data = curl_exec (); curl_close ($ ch );? >
From the above procedure, we can see that using CURLOPT_POST to set the POST method of the HTTP protocol, instead of the GET method, and then setting the POST data with CURLOPT_POSTFIELDS.
About proxy servers
The following is an example of how to use the proxy server. Pay attention to the highlighted code. the code is very simple and I don't need to talk about it.
<? Php $ ch = curl_init (); curl_setopt ($ ch, CURLOPT_URL, 'http: // www.example.com '); curl_setopt ($ ch, CURLOPT_HEADER, 1); curl_setopt ($ ch, CURLOPT_RETURNTRANSFER, 1); curl_setopt ($ ch, CURLOPT_HTTPPROXYTUNNEL, 1); curl_setopt ($ ch, CURLOPT_PROXY, 'fakeproxy. com: 1080 '); curl_setopt ($ ch, CURLOPT_PROXYUSERPWD, 'User: password'); $ data = curl_exec (); curl_close ($ ch );? >
About SSL and Cookie
For SSL, that is, the HTTPS protocol, you only need to change the http: // in the CURLOPT_URL connection to https. Of course, the parameter CURLOPT_SSL_VERIFYHOST can be set as a verification site.
For Cookie, you need to understand the following three parameters:
CURLOPT_COOKIE: set a cookie in the face-to-face session.
CURLOPT_COOKIEJAR saves a Cookie when the session ends.
CURLOPT_COOKIEFILE: the Cookie file.
HTTP server authentication
Finally, let's take a look at the situation of HTTP server authentication.
<? Php
$ Ch = curl_init ();
Curl_setopt ($ ch, CURLOPT_URL, 'http: // www.example.com ');
Curl_setopt ($ ch, CURLOPT_RETURNTRANSFER, 1 );
Curl_setopt ($ ch, CURLOPT_HTTPAUTH, CURLAUTH_BASIC );
Curl_setopt (CURLOPT_USERPWD, '[username]: [password]')
$ Data = curl_exec ();
Curl_close ($ ch );
? >
For more information, see the cURL manual.
