HTTP Post via PhP

Anon

I need to find a way to send data via a Post without using a form. We've have discussed the posibilities of using the header functions. Anyone know if this will work?

php4hosting

You can open an HTTP socket connection and send HTTP POST commands. Here is
an example by someone else :

// Generate the request header
$ReqHeader =
"POST $URI HTTP/1.1\n".
"Host: $Host\n".
"Content-Type: application/x-www-form-urlencoded\n".
"Content-Length: $ContentLength\n\n".
"$ReqBody\n";

// Open the connection to the host
$socket = fsockopen($Host, 80, &$errno, &$errstr);
if (!$socket)

$Result["errno"] = $errno;
$Result["errstr"] = $errstr;
return $Result;
}
$idx = 0;
fputs($socket, $ReqHeader);
while (!feof($socket))

$Result[$idx++] = fgets($socket, 128);
}

//-------------------------------------------
http://www.php4hosting.com $
http://www.php4hosting.co.uk £

reagent

Good example.. you beat me to the punch 🙂

I prepared this one that details how to send the varibles to the server:

Yes this is possible.
No, you cannot use the header functions, since they are only used to return information to the browser not the web server.

you would want to use fsockopen() to do this..

a simple example, you have a script script_post.php that expects the form fields
'name' and 'title':

script_post.php -
<?php
print $HTTP_POST_VARS['name']."<br>";
print $HTTP_POST_VARS['title'];
?>

now the code to post to it:

<?php
$URI = '/virtual/path/to/script_post.php';

$strVars =
"name=".urlencode("Patrick Reagan").
"&title=".urlencode("Web Programmer Extraordinaire");

$iLength = strlen($strVars);

$strHeader =
"POST $URI HTTP/1.1\n".
"Content-Type: application/x-www-form-urlencoded\n".
"Host: integra\n".
"Content-Length: $iLength\n".
"Connection: Keep-Alive\n".
"\n";

$strHeader.= $strVars;

$fp = fsockopen('your.host.here', 80);

fputs($fp, $strHeader);
print '<pre>';
print $strHeader;
fpassthru($fp);
print '</pre>';
?>

that's kind of a dirty example that just shows you what data is sent to the server and what is returned. $URI must be the full virtual path to the script you want to post to

spider_man

That's very cool, man!

reagent

"Host: integra\n".
should have been
"Host: your.host.here\n".

you may want to just have a
define('HOSTNAME', 'your.host.here');

at the top of the page and just reuse that as necessary.

Anon

Worked like a charm. Thanks guys.

mindschreck

A side example that can work is the cURL extensions for PHP (http://curl.haxx.se). Once you build it and compile their support into PHP, it is fairly easy to do posting stuff (even over https):

<?php
$URL="www.mysite.com/test.php";
$ch = curl_init();

curl_setopt($ch, CURLOPT_URL,"https://$URL");
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, "Data1=blah&Data2=blah");curl_exec ($ch);

curl_close ($ch);
?>

This will have the net effect of posting your data to the $URL site, without any header hacking :-)

You can also do other nifty things with cURL, like retrieve the HTML into variables and scrape through it for neat functionality.

Cheers,
Jason

Anon

Hi, I trying to send data of a form to an asp script without success.

The form I have to answer is something like :

there is another similar form but with netscape name instead of iexplorer. One of them will be submited using javascript.

the visBrow value will be set by javascrip function returning iexplorer + escape(navigator.appVersion)

I'm sending visBrow as a urlencoded but the site complains saying:

400 Bad Request... The parameter is incorrect

There is something to do with the fact visBrow is of the hidden type?
Do I need to send any information about the form?

Anon

Hi,

I am using a script to send VARIABLES to a REMOTE SERVER that only accepts POST method.

The PHP post script I am using is:

<?php

function post_send_headers ($fp)
{
fputs ($fp, "Accept: /\n");
fputs ($fp, "Accept-Language: en\n");
fputs ($fp, "Connection: Keep-Alive\n");
fputs ($fp, "User-Agent: Mozilla/4.0 (compatible; MSIE 5.5; Windows 98)\n");
}

function post_data ($host, $url, $data, $port=80)
{

if (strlen($host)<1) 
	return false; 

if (strlen($url)<1) 
	return false; 

if ((!is_array($data)) || sizeof($data)<1) 
	return false; 

$fp = @fsockopen ($host, $port, $errno, $errstr, 120);
$ret = "";
//if (strncasecmp ($url, "http://", 7) == 0) $url = substr ($url, 7);

$req = substr ($url, $p); 

if ($fp) 
	{
	fputs ($fp, "POST $req HTTP/1.0\n");
	post_send_headers ($fp);
	fputs ($fp, "Content-type: application/x-www-form-urlencoded\n");
	$out = "";
	while (list ($k, $v) = each ($data)) 
		{
		if(strlen($out) != 0) $out .= "&";
		$out .= rawurlencode($k). "=" .rawurlencode($v);
		}
	$out = trim ($out);
	fputs ($fp, "Content-length: ".strlen($out)."\n\n"); 
	fputs ($fp, "$out");
	fputs ($fp, "\n");
	while(!feof($fp))
		{ 
		$file_lines = file($fp);
		} 
	fclose ($fp);
	}
return $file_lines;
}

This script works OK, but it shows the RESULT of the posting in the browser. How to change the RETURN to AVOID showing the visitor of my site that a FORM was automatically send to get a VARIABLE from another SERVER.

In this case I want to calculate the value of shipping charges.

Please, help.

Anon

Try looking at using Curl it works very well

fisiculturismo

But this is a different script language, right?

I need to work in PHP only. Don't you have any idea to solve to problem?

See ya.

Anon

If PHP is compiled with curl you can do the posts you can also do https posts

See

http://www.phpfaq.info/#id55
Regards
Darren

fisiculturismo

Thanks Darren.

I will check if my ISP can handle this CURL stuff.

Do you know where I can find CURL tutorial?

I guess I won't know how to return the desired variable yet.

God bless Darren.