To enable PHP5 support on your Linux web hosting plan please do the following;
1. Log into your Ozhosting Control Panel
2. Click on Hosting
3. Click on Sites & Domains
4. Click on your domain name
5. Click on Web Hosting settings
6. Click on Edit
7. Set PHP4 to off via the selection from drop down list.
8. Click Submit
Once done it will take approximately 5 minutes for changes to take effect.