Cpanel

<?php
  $cpanelhost = 'localhost';
  $cpaneluser = 'root';
  $cpanelpass = 'pass';
  $cpaneltheme = 'justhost';
function create_subdomain($domainName, $pathDomain, $rootDomain) {
    //Generate URL for access the subdomain creation in cPanel through PHP
    $buildRequest = "/frontend/".$cpaneltheme."/subdomain/doadddomain.html?rootdomain=" . $rootDomain . "&domain=" . $domainName . "&dir=".$_SERVER['DOCUMENT_ROOT']."/".$pathDomain;

    //Open the socket
    $openSocket = fsockopen('localhost',2082);

    if(!$openSocket) {
        //SHow error
        return "Socket error";
        exit();
    }

    //Login Details
    $authString = $cpaneluser . ":" . $cpanelpass;

    //Encrypt the Login Details
    $authPass = base64_encode($authString);

    //Request to Server using GET method
    $buildHeaders = "GET " . $buildRequest ."\r\n";

    //HTTP
    $buildHeaders .= "HTTP/1.0\r\n";
    //Define Host
    $buildHeaders .= "Host:localhost\r\n";

    //Request Authorization
    $buildHeaders .= "Authorization: Basic " . $authPass . "\r\n";
    $buildHeaders .= "\r\n";

    //fputs
    fputs($openSocket, $buildHeaders);
    while(!feof($openSocket)) {
    fgets($openSocket,128);
    }
    fclose($openSocket);

    //Return the New SUbdomain with full URL
    $newDomain = "http://" . $domainName . "." . $rootDomain . "/";

    //return with Message
    echo "Created subdomain ".$newDomain;
  }
?>

<html>
<head>
<title> cPanel Subdomain Creator </title>
</head>

<body>

<form name="subdomain" method="post" action="index.php">
  <input type="text" name="subdomain" placeholder="Subdomain name" /> <br />
  <input type="text" name="domain" placeholder="Your main domain name" /> <br />
  <input type="text" name="path" placeholder="Enter Path" /> <br />
  <input type="submit" name="submit" value="Create Subdomain"/>
</form>


<?php
if (isset($_POST["submit"]) && !empty($_POST["subdomain"])) && !empty($_POST["domain"])) && !empty($_POST["path"])) {
    echo "Please fill in the information.";
}else{
  $domainName = $_POST["subdomain"];
  $pathDomain = $_POST["path"];
  $rootDomain = $_POST["domain"];
function create_subdomain($domainName, $pathDomain, $rootDomain) {
    //Generate URL for access the subdomain creation in cPanel through PHP
    $buildRequest = "/frontend/".$cpaneltheme."/subdomain/doadddomain.html?rootdomain=" . $rootDomain . "&domain=" . $domainName . "&dir=".$_SERVER['DOCUMENT_ROOT']."/".$pathDomain;

    //Open the socket
    $openSocket = fsockopen('localhost',2082);

    if(!$openSocket) {
        //SHow error
        return "Socket error";
        exit();
    }

    //Login Details
    $authString = $cpaneluser . ":" . $cpanelpass;

    //Encrypt the Login Details
    $authPass = base64_encode($authString);

    //Request to Server using GET method
    $buildHeaders = "GET " . $buildRequest ."\r\n";

    //HTTP
    $buildHeaders .= "HTTP/1.0\r\n";
    //Define Host
    $buildHeaders .= "Host:localhost\r\n";

    //Request Authorization
    $buildHeaders .= "Authorization: Basic " . $authPass . "\r\n";
    $buildHeaders .= "\r\n";

    //fputs
    fputs($openSocket, $buildHeaders);
    while(!feof($openSocket)) {
    fgets($openSocket,128);
    }
    fclose($openSocket);

    //Return the New SUbdomain with full URL
    $newDomain = "http://" . $domainName . "." . $rootDomain . "/";

    //return with Message
    echo "Created subdomain ".$newDomain;
  }
}
?>

</body>
</html>