How to let PHP to create subdomain automatically for each user?

Question

How do I create subdomain like http://user.mywebsite.com ? Do i have to access htaccess somehow? Is it actually simply possible to create it via pure php code or I need to u

Answer 1

Create Dynamic Subdomains using PHP and Htaccess

(1) Root .htaccess

This file is redirection http://www.yourwebsite.com to http://yourwebsite.com for home page use. All of the subdomain redirection to yourwebsite_folder

RewriteEngine On

RewriteCond %{HTTP_HOST} ^www.yourwebsite.com
RewriteRule (.*) http://yourwebsite.com/$1 [R=301,L]

RewriteCond %{HTTP_HOST} ^yourwebsite\.com $
RewriteCond %{REQUEST_URI} !^/yourwebsite_folder/
RewriteRule (.*) /yourwebsite_folder/$1

RewriteCond %{HTTP_HOST} ^(^.*)\.yourwebsite.com
RewriteCond %{REQUEST_URI} !^/yourwebsite_folder/
RewriteRule (.*) /yourwebsite_folder/$1

(2) Inside Folder .htaccess

This file is rewriting the subdomain urls.

http://yourwebsite.com/index.php?siteName=9lessons to http://9lessons.yourwebsite.com

Options +FollowSymLinks
RewriteEngine On

RewriteBase /

RewriteRule ^([aA-zZ])$ index.php?siteName=$1
RewriteCond %{HTTP_HOST} ^(^.*)\.yourwebsite.com
RewriteRule (.*) index.php?siteName=%1

More .htaccess tips: Htaccess File Tutorial and Tips.

index.php

This file contains simple PHP code, using regular expressions validating the subdomain value.

//HTML Code







//Home Page

//Redirect to Subdomain Page.

No Subdomain Folder

If you are using root directory(htdocs/public_html) as a project directory, use this following .htaccess file.

Options +FollowSymLinks
RewriteEngine On

RewriteBase /

RewriteCond %{HTTP_HOST} ^www.yourwebsite.com
RewriteRule (.*) http://yourwebsite.com/$1 [R=301,L]

RewriteRule ^([aA-zZ])$ index.php?siteName=$1
RewriteCond %{HTTP_HOST} ^(^.*)\.yourwebsite.com
RewriteRule (.*) index.php?siteName=%1