PHP - Use cURL to send information to another page

Question

I am trying to make a validation for a form and if everything goes right it should go to the 2nd page, where it should take the information from the $_POST.

I was told that given the way I am doing it, $_POST would not work and I should try cURL. I tried to make it work, but somehow it does not work. It redirects correctly to the install2.php but its not passing any variables to it. What i am doing wrong?

My code is as follows:

<?php 
//If the person pressed summit check for the information submited. If everything is correct move to the next page.
if (isset($_POST['submit'])) 
{
    // declare Variables
    $username = $_POST['username'];
    $password = $_POST['password'];
    $server = $_POST['server'];
    $message = "The following fields are empty: ";

    //Step 1 : Check if username & server are empty and if they are return the correct error
    if (empty($username) || empty($server) )
    {  
        if (empty($username)) { 
            $message .= "Username";
        }       
        if (empty($password)) {
            $message .= " Password";
        }
        if (empty($server)) {   
            $message .= " Server";
        }           
    }
    else 
    {       
        //Step 2: Attempt to connect to the DB with the information provided. if not sucessful return to correct error to the user.
        @$connection = mysql_connect($server,$username,$password);
        if (!$connection) 
        {
            $message = "Please check your details. the script was unable to connect to the db.";
        }
        else 
        { 
            //Step 3: Since the connection was stablished successfuly with the information provided then send the login details tot he next page
            // NOTE: For porpuses of this script I am only passing 1 variable... to make my life easier
            $ch = curl_init (); 
            curl_setopt ($ch, CURLOPT_URL, 'http://localhost/install2.php');
            curl_setopt ($ch, CURLOPT_POST, TRUE);
            curl_setopt ($ch, CURLOPT_POSTFIELDS, $username);
            curl_setopt ($ch, CURLOPT_RETURNTRANSFER, TRUE);

            $response = curl_exec ($ch);

            curl_close ($responde);
            header ('location: install2.php');
        }
    }
}
?>

Filip Roséen · Accepted Answer · 2012-07-18 23:17:26Z

1

That's not the way to pass post-fields:

curl_setopt ($ch, CURLOPT_POSTFIELDS, $username);

you should create a string:

$data = "username=$username&password=$password";

and pass it:

curl_setopt ($ch, CURLOPT_POSTFIELDS, $data);

Second, better encode the parameters you're passing using urlencode().

And last, it DOES pass the parameters when you call:

$response = curl_exec ($ch);

but, then you don't read the response and just redirect the user to:

header ('location: install2.php');

this time it's a call with no parameters which explains your problem.

edited Jul 18, 2012 at 23:17

Filip Roséen

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answered Jul 18, 2012 at 23:11

Nir Alfasi

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4 Comments

Jonathan Thurft Over a year ago

What you mean "you dont read the response and just redirect to the user?" I made the changes your suggested but its not passing them or is not getting them by a $_POST in the other file. I catch the variables via post on the other file right?? I want to send the variable to the install2.php... kinda confused here :S

Nir Alfasi Over a year ago

after $response = curl_exec ($ch); just do: echo $response;

Jonathan Thurft Over a year ago

I added it... but when i go to the install2.php is not catching anything... should i be catching the variables with _POST in "install2.php" or using something else?

Nir Alfasi Over a year ago

curl returns a content, if what you want is a simple redirect you don't need to use it, just call header ('location: install2.php?username=$username&password=$password');

ouflak · Accepted Answer · 2022-02-06 19:52:41Z

0

I remarked that your variable name is not the same.

$reponse and $responde 
$response = curl_exec ($ch);

curl_close ($responde);
header ('location: install2.php');

edited Feb 6, 2022 at 19:52

ouflak

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answered Feb 6, 2022 at 15:44

Subhahan

1

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