php curl get headers only

PHP curl can be used to crawl Web pages, analysis of Web data use, simple and easy-to-use, here to introduce its functions, such as not detailed description, put the code to see: Only a few of the main functions are retained. To implement a mock

First, write a simple crawl page function Copy Code code as follows: function Getsources ($URL, $User _agent= ', $Referer _url= ')//crawl a specified page { $URL page address that needs to be crawled $User _agent need to return

Demo Code Operation effect (Figure 1) Operation effect (Figure 2) Main Package function Multi_process ();According to the parameters, create the number of pointers to the child process.Bright spot Function 1: The

curl_setopt--Sets an option for the curl callDescribe 　 BOOL curl_setopt (INT-ch, string option, mixed value) 　 The curl_setopt () function sets the option for a curl session. The option parameter is the setting you want, and value is the values

Using curl, you can quickly crawl Web pages, simulate post, get requests, and not just some of the HTTP protocol packages, but also support FTP, proxy, HTTPS, LDAP and other applications. Curl is not unique to PHP, many languages have, a thing to

2100, ' status ' => ' Error ', ' msg ' => ' unknown error. ']; $imgs = [' image/jpeg ' => ' jpeg ', ' image/jpg ' => ' jpg ', ' image/gif ' => ' gif ', ' Image/png ' => ' png ', ' text/html ' => ' html ', ' text/plain ' => ' txt ', '

Description: Use curl to quickly crawl Web pages, simulate post, get requests, of course, not only some of the HTTP protocol encapsulation, but also support FTP, proxy, HTTPS, LDAP and other applications. Curl is not unique to PHP, many languages

The Curl command is a file transfer tool that works under the command line using URL rules.Curl supports file uploads and downloads, so it is a comprehensive transfer tool, but traditionally, it is customary to call curl as a download tool.As a

First Category:For the optional Arguments for option below, value should be set to a value of type bool:OptionsOptional value valueNoteCurlopt_autorefererAutomatically sets the Referer: information in the header when redirected according to location:

Download a single file and print the output to the standard output (stdout) by default. curl http://www.centos.org Use the-O/-O option to save the downloaded file to the specified file:-O: saves the file as the file name specified in the command