Client URL Library

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User Contributed Notes 14 notes

up
16
artem at zabsoft dot co dot in
5 years ago
Hey I modified script for php 5. Also I add support server auth. and fixed some little bugs on the script.

[EDIT BY danbrown AT php DOT net: Original was written by (unlcuky13 AT gmail DOT com) on 19-APR-09.  The following note was included:
Below is the my way of using through PHP 5 objecte oriented encapsulation to make thing easier.]

<?php
class mycurl {
     protected
$_useragent = 'Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1';
     protected
$_url;
     protected
$_followlocation;
     protected
$_timeout;
     protected
$_maxRedirects;
     protected
$_cookieFileLocation = './cookie.txt';
     protected
$_post;
     protected
$_postFields;
     protected
$_referer ="http://www.google.com";

     protected
$_session;
     protected
$_webpage;
     protected
$_includeHeader;
     protected
$_noBody;
     protected
$_status;
     protected
$_binaryTransfer;
     public   
$authentication = 0;
     public   
$auth_name      = '';
     public   
$auth_pass      = '';

     public function
useAuth($use){
      
$this->authentication = 0;
       if(
$use == true) $this->authentication = 1;
     }

     public function
setName($name){
      
$this->auth_name = $name;
     }
     public function
setPass($pass){
      
$this->auth_pass = $pass;
     }

     public function
__construct($url,$followlocation = true,$timeOut = 30,$maxRedirecs = 4,$binaryTransfer = false,$includeHeader = false,$noBody = false)
     {
        
$this->_url = $url;
        
$this->_followlocation = $followlocation;
        
$this->_timeout = $timeOut;
        
$this->_maxRedirects = $maxRedirecs;
        
$this->_noBody = $noBody;
        
$this->_includeHeader = $includeHeader;
        
$this->_binaryTransfer = $binaryTransfer;

        
$this->_cookieFileLocation = dirname(__FILE__).'/cookie.txt';

     }

     public function
setReferer($referer){
      
$this->_referer = $referer;
     }

     public function
setCookiFileLocation($path)
     {
        
$this->_cookieFileLocation = $path;
     }

     public function
setPost ($postFields)
     {
       
$this->_post = true;
       
$this->_postFields = $postFields;
     }

     public function
setUserAgent($userAgent)
     {
        
$this->_useragent = $userAgent;
     }

     public function
createCurl($url = 'nul')
     {
        if(
$url != 'nul'){
         
$this->_url = $url;
        }

        
$s = curl_init();

        
curl_setopt($s,CURLOPT_URL,$this->_url);
        
curl_setopt($s,CURLOPT_HTTPHEADER,array('Expect:'));
        
curl_setopt($s,CURLOPT_TIMEOUT,$this->_timeout);
        
curl_setopt($s,CURLOPT_MAXREDIRS,$this->_maxRedirects);
        
curl_setopt($s,CURLOPT_RETURNTRANSFER,true);
        
curl_setopt($s,CURLOPT_FOLLOWLOCATION,$this->_followlocation);
        
curl_setopt($s,CURLOPT_COOKIEJAR,$this->_cookieFileLocation);
        
curl_setopt($s,CURLOPT_COOKIEFILE,$this->_cookieFileLocation);

         if(
$this->authentication == 1){
          
curl_setopt($s, CURLOPT_USERPWD, $this->auth_name.':'.$this->auth_pass);
         }
         if(
$this->_post)
         {
            
curl_setopt($s,CURLOPT_POST,true);
            
curl_setopt($s,CURLOPT_POSTFIELDS,$this->_postFields);

         }

         if(
$this->_includeHeader)
         {
              
curl_setopt($s,CURLOPT_HEADER,true);
         }

         if(
$this->_noBody)
         {
            
curl_setopt($s,CURLOPT_NOBODY,true);
         }
        
/*
         if($this->_binary)
         {
             curl_setopt($s,CURLOPT_BINARYTRANSFER,true);
         }
         */
        
curl_setopt($s,CURLOPT_USERAGENT,$this->_useragent);
        
curl_setopt($s,CURLOPT_REFERER,$this->_referer);

        
$this->_webpage = curl_exec($s);
                  
$this->_status = curl_getinfo($s,CURLINFO_HTTP_CODE);
        
curl_close($s);

     }

   public function
getHttpStatus()
   {
       return
$this->_status;
   }

   public function
__tostring(){
      return
$this->_webpage;
   }
}
?>

[EDIT BY danbrown AT php DOT net: Contains a bugfix supplied by "roetsch.beni at googlemail (dot) com" on 02-AUG-09, with the following note: "Fixes the bugfix: 417 bug at lighthttp server."]
up
19
frank at interactinet dot com
3 years ago
I wrote the following to see if a submitted URL has a valid http response code and also if it responds quickly.

Use the code like this:

<?php
$is_ok
= http_response($url); // returns true only if http response code < 400
?>

The second argument is optional, and it allows you to check for  a specific response code

<?php
http_response
($url,'400'); // returns true if http status is 400
?>

The third allows you to specify how long you are willing to wait for a response.

<?php
http_response
($url,'200',3); // returns true if the response takes less than 3 seconds and the response code is 200
?>

<?php
function http_response($url, $status = null, $wait = 3)
{
       
$time = microtime(true);
       
$expire = $time + $wait;

       
// we fork the process so we don't have to wait for a timeout
       
$pid = pcntl_fork();
        if (
$pid == -1) {
            die(
'could not fork');
        } else if (
$pid) {
           
// we are the parent
           
$ch = curl_init();
           
curl_setopt($ch, CURLOPT_URL, $url);
           
curl_setopt($ch, CURLOPT_HEADER, TRUE);
           
curl_setopt($ch, CURLOPT_NOBODY, TRUE); // remove body
           
curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
           
$head = curl_exec($ch);
           
$httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
           
curl_close($ch);
           
            if(!
$head)
            {
                return
FALSE;
            }
           
            if(
$status === null)
            {
                if(
$httpCode < 400)
                {
                    return
TRUE;
                }
                else
                {
                    return
FALSE;
                }
            }
            elseif(
$status == $httpCode)
            {
                return
TRUE;
            }
           
            return
FALSE;
           
pcntl_wait($status); //Protect against Zombie children
       
} else {
           
// we are the child
           
while(microtime(true) < $expire)
            {
           
sleep(0.5);
            }
            return
FALSE;
        }
    }
?>

Hope this example helps.  It is not 100% tested, so any feedback [sent directly to me by email] is appreciated.
up
4
eflash at gmx dot net
6 years ago
In order to use curl with secure sites you will need a ca-bundle.crt file; here's a PHP script I've written which creates a fresh ca-bundle:
http://www.gknw.net/php/phpscripts/mk-ca-bundle.php
I've also written scripts in other languages, f.e. the Perl one which ships now with curl distributions:
http://curl.haxx.se/lxr/source/lib/mk-ca-bundle.pl
and also a Win32 WSH script if you prefer that:
http://www.gknw.net/vb/scripts/mk-ca-bundle.vbs

HTH, Guenter.
up
3
artax_N_O_S_P_A_M_erxes2 at iname dot com
4 years ago
I needed to use cURL in a php script to download data using not only SSL for the server authentication but also for client authentication.
On a default install of Fedora, setting up the proper cURL parameters, I would get an error:

$ php curl.php
Peer certificate cannot be authenticated with known CA certificates

The data on http://curl.haxx.se/docs/sslcerts.html was most useful. Indeed, toward to bottom it tells you to add a missing link inside /etc/pki/nssdb to use the ca-bundle.crt file. You do it so:

# cd /etc/pki/nssdb
# ln -s /usr/lib64/libnssckbi.so libnssckbi.so

Now you can do client authentication, provided you have your certificate handy with:

<?php
$data
= "<soap:Envelope>[...]</soap:Envelope>";
$tuCurl = curl_init();
curl_setopt($tuCurl, CURLOPT_URL, "https://example.com/path/for/soap/url/");
curl_setopt($tuCurl, CURLOPT_PORT , 443);
curl_setopt($tuCurl, CURLOPT_VERBOSE, 0);
curl_setopt($tuCurl, CURLOPT_HEADER, 0);
curl_setopt($tuCurl, CURLOPT_SSLVERSION, 3);
curl_setopt($tuCurl, CURLOPT_SSLCERT, getcwd() . "/client.pem");
curl_setopt($tuCurl, CURLOPT_SSLKEY, getcwd() . "/keyout.pem");
curl_setopt($tuCurl, CURLOPT_CAINFO, getcwd() . "/ca.pem");
curl_setopt($tuCurl, CURLOPT_POST, 1);
curl_setopt($tuCurl, CURLOPT_SSL_VERIFYPEER, 1);
curl_setopt($tuCurl, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($tuCurl, CURLOPT_POSTFIELDS, $data);
curl_setopt($tuCurl, CURLOPT_HTTPHEADER, array("Content-Type: text/xml","SOAPAction: \"/soap/action/query\"", "Content-length: ".strlen($data)));

$tuData = curl_exec($tuCurl);
if(!
curl_errno($tuCurl)){
 
$info = curl_getinfo($tuCurl);
  echo
'Took ' . $info['total_time'] . ' seconds to send a request to ' . $info['url'];
} else {
  echo
'Curl error: ' . curl_error($tuCurl);
}

curl_close($tuCurl);
echo
$tuData;
?>
up
3
pyromus at gmail dot com
6 years ago
You can use this class for fast entry

<?php
class cURL {
var
$headers;
var
$user_agent;
var
$compression;
var
$cookie_file;
var
$proxy;
function
cURL($cookies=TRUE,$cookie='cookies.txt',$compression='gzip',$proxy='') {
$this->headers[] = 'Accept: image/gif, image/x-bitmap, image/jpeg, image/pjpeg';
$this->headers[] = 'Connection: Keep-Alive';
$this->headers[] = 'Content-type: application/x-www-form-urlencoded;charset=UTF-8';
$this->user_agent = 'Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.0.3705; .NET CLR 1.1.4322; Media Center PC 4.0)';
$this->compression=$compression;
$this->proxy=$proxy;
$this->cookies=$cookies;
if (
$this->cookies == TRUE) $this->cookie($cookie);
}
function
cookie($cookie_file) {
if (
file_exists($cookie_file)) {
$this->cookie_file=$cookie_file;
} else {
fopen($cookie_file,'w') or $this->error('The cookie file could not be opened. Make sure this directory has the correct permissions');
$this->cookie_file=$cookie_file;
fclose($this->cookie_file);
}
}
function
get($url) {
$process = curl_init($url);
curl_setopt($process, CURLOPT_HTTPHEADER, $this->headers);
curl_setopt($process, CURLOPT_HEADER, 0);
curl_setopt($process, CURLOPT_USERAGENT, $this->user_agent);
if (
$this->cookies == TRUE) curl_setopt($process, CURLOPT_COOKIEFILE, $this->cookie_file);
if (
$this->cookies == TRUE) curl_setopt($process, CURLOPT_COOKIEJAR, $this->cookie_file);
curl_setopt($process,CURLOPT_ENCODING , $this->compression);
curl_setopt($process, CURLOPT_TIMEOUT, 30);
if (
$this->proxy) curl_setopt($process, CURLOPT_PROXY, $this->proxy);
curl_setopt($process, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($process, CURLOPT_FOLLOWLOCATION, 1);
$return = curl_exec($process);
curl_close($process);
return
$return;
}
function
post($url,$data) {
$process = curl_init($url);
curl_setopt($process, CURLOPT_HTTPHEADER, $this->headers);
curl_setopt($process, CURLOPT_HEADER, 1);
curl_setopt($process, CURLOPT_USERAGENT, $this->user_agent);
if (
$this->cookies == TRUE) curl_setopt($process, CURLOPT_COOKIEFILE, $this->cookie_file);
if (
$this->cookies == TRUE) curl_setopt($process, CURLOPT_COOKIEJAR, $this->cookie_file);
curl_setopt($process, CURLOPT_ENCODING , $this->compression);
curl_setopt($process, CURLOPT_TIMEOUT, 30);
if (
$this->proxy) curl_setopt($process, CURLOPT_PROXY, $this->proxy);
curl_setopt($process, CURLOPT_POSTFIELDS, $data);
curl_setopt($process, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($process, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt($process, CURLOPT_POST, 1);
$return = curl_exec($process);
curl_close($process);
return
$return;
}
function
error($error) {
echo
"<center><div style='width:500px;border: 3px solid #FFEEFF; padding: 3px; background-color: #FFDDFF;font-family: verdana; font-size: 10px'><b>cURL Error</b><br>$error</div></center>";
die;
}
}
$cc = new cURL();
$cc->get('http://www.example.com');
$cc->post('http://www.example.com','foo=bar');
?>

[EDIT BY danbrown AT php DOT net: Includes a bugfix provided by "Anonymous" on 01-Dec-2008 @ 06:52.  Also replaced real URL with example.com as per RFC 2606.]

[EDIT BY danbrown AT php DOT net: Includes a bugfix provided by (manuel AT rankone DOT ch) on 24-NOV-09 to properly reference cURL initialization.]
up
2
ramez at dot dontspan dot zegenie dot com
4 years ago
CURL failed with PHP5.3 and Apache2.2.X on my Windows 7 machine.

It turns out that it's not enough to copy the two dll's mentioned (libeay32 and sslea32) from the php folder into your system32 folder. You HAVE TO UNBLOCK THESE TWO FILES.

Right click the file, select unblock, for each one. Then restart Apache.

Another very handy security feature added into Windows.
up
0
qrworld.net
12 days ago
Here you have a function that I use to get the content of a URL using cURL:

function getUrlContent($url){
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; .NET CLR 1.1.4322)');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 5);
curl_setopt($ch, CURLOPT_TIMEOUT, 5);
$data = curl_exec($ch);
$httpcode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
curl_close($ch);
return ($httpcode>=200 && $httpcode<300) ? $data : false;
}

The source comes from this website:

http://softontherocks.blogspot.com/2014/11/descargar-el-contenido-de-una-url.html
up
0
madhouse-network at hotmail dot com
3 years ago
curl does not seem to work with SSL TLS (FTPES)

It will throw the following error:

(1) Protocol ftpes not supported or disabled in libcurl
up
0
cliffclof atty gmail dotty com
4 years ago
A solution that addresses repeat calls to the same set of urls using the same connection simulating frequent ajax calls in separate browser tabs.

In a unique situation you may need to set a cookie then use that cookie for multiple separate persistent connections using the same session cookie.  The problem is the session cookie may change while your doing your persistent calls.  If you set every curl handle to update a shared cookiejar on close you may overwrite the new found session value with the old session value depending on the closing order of your handles. Also, because the cookiejar is only written to on a curl_close, you may be using dissimilar or old session info in some of your 'faked browser tabs'.

To solve this problem I created a unique handle that opens and closes specifically to set a cookie file using CURLOPT_COOKIEJAR. Then I just use the read-only CURLOPT_COOKIEFILE on the multiple separate persistent handles.

This solves the problem of shared cookies fighting to write their values and keep persistent calls using the most up to date cookie information.

Note: In my case the multiple calls were in a while loop and I was using php in shell.  The session cookie value plus browser type limited the number of connections available and i wanted to use the max connections per session.
up
-1
admin at jeremyzaretski dot com
5 years ago
I wanted to create a script that acted as a bridge between an external server and an internal server, wherein the internal server was not connected to the internet, but had information required by the users connecting to the external server. I hatched the idea to use curl to connect from the external server to the internal server (using request variables to send queries) and return everything (data and headers) returned by the file server.

After being driven mad by segmentation faults and crashes because the curl_exec didn't like me having the CURLOPT_HEADERFUNCTION's function directly dumping the header:

<?php
function Duplicate_Header($curl, $header)
{
   
header($header);
    return
strlen($header);
}
?>

... I tried (on a whim) duplicating and trimming the header and passing the duplicate to the header function...

<?php
function Duplicate_Header($curl, $header)
{
   
$duplicate = trim($header);
   
header($duplicate);
    return
strlen($header);
}
?>

Which worked just fine. I don't know if this is just some quirk of PHP4 or my lack of understanding of how the curl and header function works.
up
-2
mkucera66 at seznam dot cz
1 year ago
FYI cURL support (default enabled, ok) is prerequisite for Installation and Configuration of the Collection Extension of wiki portal.
up
-1
fred dot knieper at gmail dot com
11 months ago
After a lot of frustration with the fact that nobody has documented which curl commandline options go with which library functions, I discovered that the curl commandline will tell you (in the form of a C program) if you add `--libcurl foo.c`

If you've been struggling with trying to figure out how to get your fancy curl commandline to work in PHP, this makes it a breeze!
up
-6
shidec00 at yahoo dot com
3 years ago
This anomali only happen on windows.
Server indicates that some variables built by http_build_query() is missing.

<?php
//...
//...
//...
$ping_url = $this->sx_url.'ping.php?'.http_build_query($options);
$message = $this->_post_curl($ping_url);
?>

After debugging i found that $ping_url contain url like :

http://example.com/ping.php?app=1&amp;key=mail&amp;ttd=df52861e

But myserver give "No ttd GET variable" response

This problem fixed by adding optional parameter to make sure that http_build_query() use only '&' as arg separator rather than '&amp;'

<?php
//...
//...
//...
$ping_url = $this->sx_url.'ping.php?'.http_build_query($options,'','&');
$message = $this->_post_curl($ping_url);
?>
up
-13
arturo at midnightvip dot com
1 year ago
Hey I modified script for php 5. Also I add support server auth. and fixed some little bugs on the script.

<?php
class mycurl {
     protected
$_useragent = 'Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1';
     protected
$_url;
     protected
$_followlocation;
     protected
$_timeout;
     protected
$_maxRedirects;
     protected
$_cookieFileLocation = './cookie.txt';
     protected
$_post;
     protected
$_postFields;
     protected
$_referer ="http://www.midnightvip.com";

     protected
$_session;
     protected
$_webpage;
     protected
$_includeHeader;
     protected
$_noBody;
     protected
$_status;
     protected
$_binaryTransfer;
     public   
$authentication = 0;
     public   
$auth_name      = '';
     public   
$auth_pass      = '';

     public function
useAuth($use){
      
$this->authentication = 0;
       if(
$use == true) $this->authentication = 1;
     }

     public function
setName($name){
      
$this->auth_name = $name;
     }
     public function
setPass($pass){
      
$this->auth_pass = $pass;
     }

     public function
__construct($url,$followlocation = true,$timeOut = 30,$maxRedirecs = 4,$binaryTransfer = false,$includeHeader = false,$noBody = false)
     {
        
$this->_url = $url;
        
$this->_followlocation = $followlocation;
        
$this->_timeout = $timeOut;
        
$this->_maxRedirects = $maxRedirecs;
        
$this->_noBody = $noBody;
        
$this->_includeHeader = $includeHeader;
        
$this->_binaryTransfer = $binaryTransfer;

        
$this->_cookieFileLocation = dirname(__FILE__).'/cookie.txt';

     }

     public function
setReferer($referer){
      
$this->_referer = $referer;
     }

     public function
setCookiFileLocation($path)
     {
        
$this->_cookieFileLocation = $path;
     }

     public function
setPost ($postFields)
     {
       
$this->_post = true;
       
$this->_postFields = $postFields;
     }

     public function
setUserAgent($userAgent)
     {
        
$this->_useragent = $userAgent;
     }

     public function
createCurl($url = 'nul')
     {
        if(
$url != 'nul'){
         
$this->_url = $url;
        }

        
$s = curl_init();

        
curl_setopt($s,CURLOPT_URL,$this->_url);
        
curl_setopt($s,CURLOPT_HTTPHEADER,array('Expect:'));
        
curl_setopt($s,CURLOPT_TIMEOUT,$this->_timeout);
        
curl_setopt($s,CURLOPT_MAXREDIRS,$this->_maxRedirects);
        
curl_setopt($s,CURLOPT_RETURNTRANSFER,true);
        
curl_setopt($s,CURLOPT_FOLLOWLOCATION,$this->_followlocation);
        
curl_setopt($s,CURLOPT_COOKIEJAR,$this->_cookieFileLocation);
        
curl_setopt($s,CURLOPT_COOKIEFILE,$this->_cookieFileLocation);

         if(
$this->authentication == 1){
          
curl_setopt($s, CURLOPT_USERPWD, $this->auth_name.':'.$this->auth_pass);
         }
         if(
$this->_post)
         {
            
curl_setopt($s,CURLOPT_POST,true);
            
curl_setopt($s,CURLOPT_POSTFIELDS,$this->_postFields);

         }

         if(
$this->_includeHeader)
         {
              
curl_setopt($s,CURLOPT_HEADER,true);
         }

         if(
$this->_noBody)
         {
            
curl_setopt($s,CURLOPT_NOBODY,true);
         }
        
/*
         if($this->_binary)
         {
             curl_setopt($s,CURLOPT_BINARYTRANSFER,true);
         }
         */
        
curl_setopt($s,CURLOPT_USERAGENT,$this->_useragent);
        
curl_setopt($s,CURLOPT_REFERER,$this->_referer);

        
$this->_webpage = curl_exec($s);
                  
$this->_status = curl_getinfo($s,CURLINFO_HTTP_CODE);
        
curl_close($s);

     }

   public function
getHttpStatus()
   {
       return
$this->_status;
   }

   public function
__tostring(){
      return
$this->_webpage;
   }
}
?>
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