How to put POST form data in action - php

Question

I am trying to setup a user creation API for VestaCP. I have these two pages.
The form:
<form action="process.php" method="post">
Username:<br>
<input type="text" name="username">
<br>
Password:<br>
<input type="password" name="password">
<br>
Email Address:<br>
<<input type="email" name="email">
<br><br>
<input type="submit" value="Submit">
</form>
Then the action:
<?php
// Server credentials
$vst_hostname = 'MYSERVERADDRESS';
$vst_username = 'MYSERVERUSERNAME';
$vst_password = 'MYSERVERPASSWORD';
$vst_command = 'v-add-user';
// New Account
$username = 'username';
$password = 'password';
$email = 'email';
$package = 'Free';
$fist_name = 'Null';
$last_name = 'Null';
// Prepare POST query
$postvars = array(
'user' => $vst_username,
'password' => $vst_password,
'returncode' => $vst_returncode,
'cmd' => $vst_command,
'arg1' => $username,
'arg2' => $password,
'arg3' => $email,
'arg4' => $package,
'arg5' => $fist_name,
'arg6' => $last_name
);
$postdata = http_build_query($postvars);
// Send POST query via cURL
$postdata = http_build_query($postvars);
$curl = curl_init();
curl_setopt($curl, CURLOPT_URL, 'http://' . $vst_hostname . ':8083/api/');
curl_setopt($curl, CURLOPT_RETURNTRANSFER,true);
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, false);
curl_setopt($curl, CURLOPT_POST, true);
curl_setopt($curl, CURLOPT_POSTFIELDS, $postdata);
$answer = curl_exec($curl);
// Check result
if($answer == 0) {
echo "User account has been successfuly created\n";
} else {
echo "Query returned error code: " .$answer. "\n";
}
?>
I think the problem is inputting the form data into the php script but I'm not very experienced so I don't know.
The API is connecting to my server correctly as I tested the same
//Server Credentials
part with a different API and it worked.
When I run this script, it outputs "User account has been successfully created" but when I check my control panel, there is no new user.
Thank you for any help.
EDIT: I only wrote the form, this script was made by VestaCP as shown here: https://vestacp.com/docs/api/. The errors in this script are direct from Vesta.

Answer 1

Try this:
<form action="process.php" method="post">
Username:<br>
<input type="text" name="username">
<br>
Firstname:<br>
<input type="text" name="firstname">
<br>
Name:<br>
<input type="text" name="name">
<br>
Password:<br>
<input type="password" name="password">
<br>
Email Address:<br>
<input type="email" name="email">
<br><br>
<input type="submit" value="Submit">
</form>
process.php
<?php
// Server credentials
$vst_hostname = 'MYSERVERADDRESS';
$vst_username = 'admin';
$vst_password = 'ADMINPASSWORD';
$vst_returncode = 'yes';
$vst_command = 'v-add-user';
// New Account
$username = $_POST['username'];
$password = $_POST['password'];
$email = $_POST['email'];
$package = 'default'; // $package = 'Free'; //Free package exist on server?
$fist_name = $_POST['firstname'];
$last_name = $_POST['name'];
// Prepare POST query
$postvars = array(
'user' => $vst_username,
'password' => $vst_password,
'returncode' => $vst_returncode,
'cmd' => $vst_command,
'arg1' => $username,
'arg2' => $password,
'arg3' => $email,
'arg4' => $package,
'arg5' => $fist_name,
'arg6' => $last_name
);
$postdata = http_build_query($postvars);
// Send POST query via cURL
$postdata = http_build_query($postvars);
$curl = curl_init();
curl_setopt($curl, CURLOPT_URL, 'http://' . $vst_hostname . ':8083/api/');
curl_setopt($curl, CURLOPT_RETURNTRANSFER,true);
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, false);
curl_setopt($curl, CURLOPT_POST, true);
curl_setopt($curl, CURLOPT_POSTFIELDS, $postdata);
$answer = curl_exec($curl);
// Check result
if($answer == 0) {
echo "User account has been successfuly created\n";
} else {
echo "Query returned error code: " .$answer. "\n";
}
?>