Its very easy to check if php is installed on your Web Server

1. Create a text file, e.g. using notepad or any other text editor:

2. Save the file as "version.php". Make sure, that the extension is .php (not .txt)

3. Upload the file to the root of your web

4. Open the file in your web browser, e.g. http://www.yourdomain.tld/version.php

5. Delete the file on your web server after you are done. You should be the only one seeing this information!

How to detect the php Version?

Run the phpinfo() script above. 
It contains much more information, like:

• php Version
• Build Date
• Configuration
• ...
• Installed php Modules
• php Variables