Modified version of http://www.zubrag.com/scripts/cpanel-subdomains-creator.php

cpanel-subdomains-creator.php

<?php

###############################################################
# cPanel Subdomains Creator 1.1
###############################################################
# Visit http://www.zubrag.com/scripts/ for updates
###############################################################
#
# Can be used in 3 ways:
# 1. just open script in browser and fill the form
# 2. pass all info via url and form will not appear
# Sample: cpanel_subdomains.php?cpaneluser=USER&cpanelpass=PASSWORD&domain=DOMAIN&subdomain=SUBDOMAIN
# 3. list subdomains in file. In this case you must provide all the defaults below
#
# Note: you can omit any parameter, except "subdomain".
# When omitted, default value specified below will be taken
###############################################################

// cpanel user
define('CPANELUSER','user');

// cpanel password
define('CPANELPASS','pass');

// name of the subdomains list file.
// file format may be 1 column or 2 columns divided with semicilon (;)
// Example for two columns:
//   rootdomain1;subdomain1
//   rootdomain1;subdomain2
// Example for one columns:
//   subdomain1
//   subdomain2
define('INPUT_FILE','domains.txt');

// cPanel skin (mainly "x")
// Check http://www.zubrag.com/articles/determine-cpanel-skin.php
// to know it for sure
define('CPANEL_SKIN','paper_lantern');

// Default domain (subdomains will be created for this domain)
// Will be used if not passed via parameter and not set in subdomains file
define('DOMAIN','');


/////////////// END OF INITIAL SETTINGS ////////////////////////
////////////////////////////////////////////////////////////////

function getVar($name, $def = '') {
  if (isset($_REQUEST[$name]) && ($_REQUEST[$name] != ''))
    return $_REQUEST[$name];
  else
    return $def;
}

$cpaneluser=getVar('cpaneluser', CPANELUSER);
$cpanelpass=getVar('cpanelpass', CPANELPASS);
$cpanel_skin = getVar('cpanelskin', CPANEL_SKIN);

if (isset($_REQUEST["subdomain"])) {
  // get parameters passed via URL or form, emulate string from file
  $doms = array( getVar('domain', DOMAIN) . ";" . $_REQUEST["subdomain"]);
  if (getVar('domain', DOMAIN) == '') die("You must specify domain name");
}
else {
  // open file with domains list
  $doms = @file(INPUT_FILE);
  if (!$doms) {
    // file does not exist, show input form
    echo "
Cannot find input file with subdomains information. It is ok if you are not creating subdomains from file.<br>
Tip: leave field empty to use default value you have specified in the script's code.<br>
<form method='post'>
  Subdomain:<input name='subdomain'><br>
  Domain:<input name='domain'><br>
  cPanel User:<input name='cpaneluser'><br>
  cPanel Password:<input name='cpanelpass'><br>
  cPanel Skin:<input name='cpanelskin'><br>
  <input type='submit' value='Create Subdomain' style='border:1px solid black'>
</form>";
    die();
  }
}

// create subdomain
function subd($host,$port,$ownername,$passw,$request) {

  $errno = "";
  $errstr = "";
  $context = stream_context_create();

  $result = stream_context_set_option($context, 'ssl', 'verify_peer', false);
  $result = stream_context_set_option($context, 'ssl', 'verify_host', false);
  $result = stream_context_set_option($context, 'ssl', 'allow_self_signed', true);
  // host of cert, need to provide if you are getting self-signed cert and using ip as host
  // if you are getting error - replace $host with correct host string
  $result = stream_context_set_option($context, 'ssl', 'CN_match', $host);

  $sock = stream_socket_client('ssl://' . $host . ':' . $port, $errno, $errstr, 60, STREAM_CLIENT_CONNECT, $context);
  if(!$sock) {
    print('Socket error');
    exit();
  }

  $authstr = "$ownername:$passw";
  $pass = base64_encode($authstr);
  $in = "GET $request\r\n";
  $in .= "HTTP/1.0\r\n";
  $in .= "Host:$host\r\n";
  $in .= "Authorization: Basic $pass\r\n";
  $in .= "\r\n";

  fputs($sock, $in);
  while (!feof($sock)) {
    $result .= fgets ($sock,128);
  }
  fclose( $sock );

  return $result;
}

foreach($doms as $dom) {
  $lines = explode(';',$dom);
  if (count($lines) == 2) {
    // domain and subdomain passed
    $domain = trim($lines[0]);
    $subd = trim($lines[1]);
  }
  else {
    // only subdomain passed
    $domain = getVar('domain', DOMAIN);
    $subd = trim($lines[0]);
  }
  // https://[host here]:[port here]/cpsess1611018255/frontend/paper_lantern/subdomain/doadddomain.html?rootdomain=[domain here]&domain=[subdomain here]
  // Don't forget to sign in into your cpanel and check if you have the same prefix (cpsess1611018255)
  $request = "/cpsess1611018255/frontend/$cpanel_skin/subdomain/doadddomain.html?rootdomain=$domain&domain=$subd";
  // 2083 - port of cpanel, can be 2082 or any other
  // If host of your cpanel is different from your domain, please replace it with string in line below
  $result = subd($domain,2083,$cpaneluser,$cpanelpass,$request);
  $show = strip_tags($result);
  echo $show;
}

?>

I am getting following error

stream_socket_client(): Failed to enable crypto in cpanel-subdomains-creator.php on line 98

That's work for me, thanks👍👍