SiteGround supports PHP 4 on all shared servers.

In order to change the PHP version for your account, follow these steps.

• Go to cPanel, File Manager
• Choose "Web Root (public_html/www)"
• Create a new file (or open the existing one for editing) called .htaccess
• Add the following line:

AddHandler application/x-httpd-php4 .php .php5 .php4 .php3