Use the PHP curl_setopt () function to implement a simple example of crawling Web pages and post data

The previous article to explain the concept of PHP curl_setopt function, it is an extension of PHP library, using the curl_setopt () function can be easily and quickly crawl Web pages (can be used in the acquisition), using it needs to be configured in the php.ini to open.

Extension=php_curl.dll

Now that you can use the PHP curl_setopt function, we'll look at the first usage now:

1. A simple example of crawling a webpage:

The code is as follows:

<?php//Create a new curl resource  $ch = Curl_init ();//Set URL and corresponding options  curl_setopt ($ch, Curlopt_url, "http://www.php.cn/"); curl_setopt ($ch, Curlopt_header, false);//Fetch the URL and pass it to the browser  curl_exec ($ch);//Close the Curl resource and release the system Resource  curl_close ($ CH);?>

The example code above captures a Web page with a domain name of http://www.php.cn/, and the code runs as follows:

2. Post Data case:

When using curl, there are often data interactions, so it's more important.

<?php       $ch = Curl_init ();       /* Note here that the data to be submitted cannot be a two-dimensional array or higher      * For example, array (' Name ' =>serialize (' tank ', ' Zhang '), ' sex ' =>1, ' birth ' = > ' 20101010 ')      * such as array (' Name ' =>array (' tank ', ' Zhang '), ' sex ' =>1, ' birth ' = ' 20101010 ') This will be an      error */ $data = Array (' name ' = ' = ' test ', ' sex ' =>1, ' birth ' = ' 20101010 ');       curl_setopt ($ch, Curlopt_url, ' http://localhost/mytest/curl/upload.php ');       curl_setopt ($ch, Curlopt_post, 1);       curl_setopt ($ch, Curlopt_postfields, $data);       Curl_exec ($ch);       ? >

In the upload.php file, Print_r ($_post); Use curl to scratch out the contents of the upload.php output array ([name] + test [sex] = 1 [birth] + 20101010)