You can find out the version of different programs that Heart Internet run by logging into your Planet HIppo Control Panel. Select the Web Diagnostics section and then select 'Paths and Versions'. You can use different versions of PHP by changing the extension on the script in question. PHP5 is the default, so to use php5, leave its extension as .php. If you want to use PHP4 with a script, change the extension to .php4. If you wish to default all .php scripts in your hosting space to use PHP4, but do not want to change the extension, place this line into a .htaccessfile in your FTP spaceSetEnv DEFAULT_PHP_VERSION 4
Both PHP 4 and 5 are available on Planet Hippo servers.
