help with fopen

cabaz777

hi all

im not a coder and im having problems building a little code to post something to a php file.

i have this:

<?php
    $date=$_GET['day'] . / . $_GET['month'] ./. $_GET['year']

   $fp=fopen("http://www.domain.com/file.php?userid={userid}&firstname={firstname}&lastname={lastname}&date=$date);
  fclose($fp);
  header (location: [url]http://domain.com/thankyou.html[/url]);
?>

as u can see , my php skills are near to zero :queasy: :queasy:

what i want is the foll:
i have a form that post the info to file.php using GET, then file.php should get the 3 values for day, month and year and build a $date in the foll format: dd/mm/yyyy

finally, the fopen should open an external link that accepts POST and GET where it should post all the variables submitted by the form using fopen (or any other method) including the new $date format

then just redirect to the thank you page

can some1 help me out

thx in adv

Installer

This looks like a perfect use for curl:

ob_start()
$date=$_GET['day'] . '/' . $_GET['month'] . '/' . $_GET['year']
$url = 'http://www.domain.com/file.php';
$post = 'userid=012&firstname=Joe&lastname=Smith&date=' . $date;
$ch = curl_init(); 
curl_setopt($ch, CURLOPT_URL, $url); 
curl_setopt($ch, CURLOPT_POST, 1); 
curl_setopt($ch, CURLOPT_POSTFIELDS, $post); 
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);   

$curl = curl_exec($ch); 
curl_close($ch);
$redirect = 'http://www.domain.com/thankyou.html';
header('Location: ' . $redirect);
ob_end_flush();

jazz_snob

Also, for future reference, you should specify a 'mode' when you use fopen() although I've not used fopen to open a file on a remote machine ( have used this )

cabaz777

txs u 4 the curl code.

anyway, im getting parse errors for 2 lines ($date and $url)

can some1 help me :rolleyes:

Installer

If you see any lines that don't end with semicolons, add semcolons to the ends of those lines.

cabaz777

thanks for the semicolon point (i need to learn php urgently to stop asking these stupid things) but by now i cannot gat it to work yet.

to be clear: i have a html page with a form that posts the values to the curl.php file below. for the date it posts 3 values (day, month and year) that im merging below to build a $date with dd/mm/yyyy format

here is my code called curl.php:

PHP:

<?php
ob_start();
$date = $GET["day"] . '/' . $GET["month"] . '/' . $GET["year"];
$email = $GET['email'];
$userid = $GET['userid'];
$firstname = $GET['firstname'];
$lastname = $GET['lastname'];
$zipcode = $GET['zipcode'];
$url = "http://www.anotherdomain.com/signup.php";

$post = 'email=$email&userid=$userid&firstname=$firstname&lastname=$lastname&zipcode=$zipcode&birthdate=$date';

$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, $url);

curl_setopt($ch, CURLOPT_POST, 1);

curl_setopt($ch, CURLOPT_POSTFIELDS, $post);

curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

$curl = curl_exec($ch);

curl_close($ch);

$redirect = 'http://www.domain.com/thankyou.html';

header('Location: ' . $redirect);

ob_end_flush();

?>

but i cannot get it to post properly

also i need to setup the $redirect variable to the referrer thankyou page, lets say the forms comes from different domains like:
www.anydomainintheworld.com/form.html so what i want to do is to $redirect = "http://anydomainintheworld.com/thankyou.html

i think i need to GET the referrer url to build the $redirect, but i dont know how

txs in adv, u have been really helpful

Installer

The referrer is available in the "SERVER" superglobal array, as "SERVER['HTTP_REFERER']".
You can build the header URL like this:

$ref = $_SERVER['HTTP_REFERER'];
$ref_arr = parse_url($ref);
$host = $ref_arr['scheme'] . '://' . $ref_arr['host'];  // or: 'http://' . $ref_arr['host']
$redirect = $host . '/thankyou.html'; 
header('Location: ' . $redirect);

The line:

$post = 'email=$email&userid=$userid&firstname=$firstname
        &lastname=$lastname&zipcode=$zipcode&birthdate=$date';

doesn't pass the variables; it passes the variable names. You need to either double-quote it:

$post = "email=$email&userid=$userid&firstname=$firstname
        &lastname=$lastname&zipcode=$zipcode&birthdate=$date";

or concatenate it:

$post = 'email=' . $email . '&userid=' . $userid . '&firstname=' . $firstname . 
        '&lastname=' . $lastname . '&zipcode=' . $zipcode . '&birthdate=' . $date';

cabaz777

thaaaaaaaaanks u installer

it works almost perfect

wonder if there is a workaround about the
$_SERVER['HTTP_REFERER'] to do this:

as i can see it redirects to the thankyou.html page located
at www.domain.com/thankyou.html from where
the form was submitted, but if the form is located at
domain.com/folder/form.html it should redirect to
domain.com/folder/thankyou.html

what i mean is how to reach the folder where the form is located
in order to redirect to a thankyou page located in the same folder

and the very last question:
someone helped me with the fopen before saying to add a string
in order to check if the userid is already taken, then add a
number after it in order to resubmit with an alternative one

i got this code to do that:

{
     $fp = fopen('http://url?email=blah&the_rest=blah', 'r');
     $result = fread($fp, 8192); 
     fclose($fp);
     if (strstr($result, 'fail'))
     {
         if (strstr($result, 'duplicate user'))
             $userid .= rand(0, 9);
     }
} while (strstr($result, 'duplicate user'));

what i did is trying to implement this with the curl u suggested before doing this:

$ch = curl_init();  

{
curl_setopt($ch, CURLOPT_URL, $url);  

curl_setopt($ch, CURLOPT_POST, 1);  

curl_setopt($ch, CURLOPT_POSTFIELDS, $post);  

curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);    

$curl = curl_exec($ch);  

curl_close($ch);
if (strstr($result, 'fail'))
     {
         if (strstr($result, 'duplicate user'))
             $userid .= rand(0, 9);
     }
} while (strstr($result, 'duplicate user'));

as u can see i just tried to clone it in the curl thing but im almost
sure i had missing something , in fact i dont know if this can be
done with this code, just tried with my almost zero php skills (u
noticed :queasy: )

btw, "duplicate user" is the error the external file replies if a user
id already exists

any idea? (it will be the last, hope ) 😉 😉

Installer

To answer your second-to-last question: If you replace this code:

$ref = $_SERVER['HTTP_REFERER']; 
$ref_arr = parse_url($ref); 
$host = $ref_arr['scheme'] . '://' . $ref_arr['host']; 
$redirect = $host . '/thankyou.html';  

header('Location: ' . $redirect);

with this:

$redirect = thankyou_url($_SERVER['HTTP_REFERER']);  

header('Location: ' . $redirect);

and put this function somewhere in the script (at the bottom where it's
out of the way is a good place) or in an included file:

function thankyou_url($url)
{
    $arr = parse_url($url);
    $return = $arr['scheme'] . '://' . $arr['host'];   

    if (($sub_ct = substr_count($arr['path'], '/')) > 1) {
        $l_pos = strpos($arr['path'], '/');
        $r_pos = strrpos($arr['path'], '/');
        $dir_str = substr($arr['path'], $l_pos, $r_pos - $l_pos);
        $return .= $dir_str;
    }
    $return .=  '/thankyou.html';
    return $return;
}

you then should get what you want. I'm glad to help and I hope that using and
studying the code, and looking up the PHP functions used, etc., will help you
learn PHP. You can probably even find ways to improve my code.

I'll come back to your last question when I have some more time. hth

cabaz777

thank u installer

u have been very helpful 4 me. 😃