Passing Post Variables

susb8383 · March 6th, 2007, 11:58 PM

Hi,

I'm fairly new to php and know only basics.

I want to redirect to a php page from a php page, passing post variables. I see a lot of forum posts saying you can use the sendToHost function, but none of them give examples on how to call the function so that you actually do the redirect.

If the first page has the sendtohost function, which sets up post variables, how do you redirect to the second php page so that you can access those variables? I set it up as shown below, but all I get is a blank page, not a redirect to page 2.

Also, what is the php syntax so that you call the function? Do you put the function first, then a call to the function? Not having specific examples, this is what I have:

page1.php contains:

Code:

<?php 
/* sendToHost
 * ~~~~~~~~~~
 * Params:
 *   $host      - Just the hostname.  No http:// or
                  /path/to/file.html portions
 *   $method    - get or post, case-insensitive
 *   $path      - The /path/to/file.html part
 *   $data      - The query string, without initial question mark
 *   $useragent - If true, 'MSIE' will be sent as
                  the User-Agent (optional)
 *
 * Examples:
 *   sendToHost('www.google.com','get','/search','q=php_imlib');
 *   sendToHost('www.example.com','post','/some_script.cgi',
 *              'param=First+Param&second=Second+param');
 */

function sendToHost($host,$method,$path,$data,$useragent=0)  
{
    // Supply a default method of GET if the one passed was empty
    if (empty($method)) {
        $method = 'GET';
    }
    $method = strtoupper($method);
    $fp = fsockopen($host, 80);
    if ($method == 'GET') {
        $path .= '?' . $data;
    }
    fputs($fp, "$method $path HTTP/1.1\r\n");
    fputs($fp, "Host: $host\r\n");
    fputs($fp,"Content-type: application/x-www-form- urlencoded\r\n");
    fputs($fp, "Content-length: " . strlen($data) . "\r\n");
    if ($useragent) {
        fputs($fp, "User-Agent: MSIE\r\n");
    }
    fputs($fp, "Connection: close\r\n\r\n");
    if ($method == 'POST') {
        fputs($fp, $data);
    }

    while (!feof($fp)) {
        $buf .= fgets($fp,128);
    }
    fclose($fp);
    return $buf;
}
?>

<?php sendToHost('www.squirrelfreebirding.com','post','/downloads/test.php','utm_nooverride=1'); ?>
?>

susb8383 · March 10th, 2007, 01:32 AM

Gave up trying to get this to work. I found lots of forum posts where other people had the same question.

However, I used curl to do what I want. I know next to nothing about PHP, but enought to find examples online. So for those of you who also know next to nothing about PHP but want to redirect, passing parameters, but not having them be part of a query string, here's a very simple example:

page1.php:

Code:

<?php 
$url = "http://www.mydomain.com/page2.php"; 
$ch = curl_init();    // initialize curl handle 
curl_setopt($ch, CURLOPT_URL,$url); // set url to post to 
curl_setopt($ch, CURLOPT_FAILONERROR, 1); 
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);// allow redirects 
curl_setopt($ch, CURLOPT_RETURNTRANSFER,1); // return into a variable 
curl_setopt($ch, CURLOPT_TIMEOUT, 3); // times out after 4s 
curl_setopt($ch, CURLOPT_POST, 1); // set POST method 
curl_setopt($ch, CURLOPT_POSTFIELDS, "test=hello&test2=there"); // add POST fields 
$result = curl_exec($ch); // run the whole process 
curl_close($ch);  
echo $result; 
?>

page2.php:

Code:

<html>
<head></head>
<body>
<?php echo $_POST['test']; ?>  <?php echo $_POST['test2']; ?>
</body>
</html>

If it won't work, put this in page1.php before curl_close, which will display the contents of the variables and any error messages to your screen:

Code:

print_r(curl_getinfo($ch));  
echo "\n\ncURL error number:" .curl_errno($ch);  
echo "\n\ncURL error:" . curl_error($ch);  
// ...close cURL handle ($ch) below

jmaronilla · March 22nd, 2007, 10:38 PM

Try this:
$id = @$_GET['id'];
if (!isset($id))
{
  // redirect:
  header('Location: http://www.example.com');
  exit();
}

sylar · April 1st, 2007, 02:07 PM

nice code jmaronilla.....

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