Tạo Subdomain với 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=P ASSWORD&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/deter...panel-skin.php
// to know it for sure
define('CPANEL_SKIN','x');

// 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) {

$sock = fsockopen('localhost',2082);
if(!$sock) {
print('Socket error');
exit();
}

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

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]);
}
// http://&#91;domainhere]:2082/frontend/x/...n.html?domain=[subdomain here]&rootdomain=[domain here]
$request = "/frontend/$cpanel_skin/subdomain/doadddomain.html?rootdomain=$domain&domain=$subd";
$result = subd('localhost',2082,$cpaneluser,$cpanelpass,$req uest);
$show = strip_tags($result);
echo $show;
}

?>


Đây là hàm em tìm trên GG.
Các bác gíp em giải thích với.
Giả sử em có doamin abc.com
nay muốn tự động tạo sub domian: 123.abc.com thì làm thế nào?