Different web applications demands different PHP version and settings inside specific version. If you installing PHP by your self it can be tiresome, but if you are cPanel user it is very simple.
First check with application developers on what version application works. If it is one of well known applications such as WordPress or Joomla, consult online documentation what application version which version of the application is using which PHP version.
Now login to your cPanel and scroll down to Software and Services and select Select PHP Version (Slide 1.).
On next page you will be able to see current version and to select future. It is important to understand that you need to know required PHP version on application upgrade as well as on installation. Select one of the listed options (Slide 2).
Last section is about PHP options and extensions (Slide 3 & 4). Switch between Settings and Extension by selecting link in upper right corner.
Most CMSs will inform you on installation if you need to change something particular, but in case of custom applications consult documentation or even better, developers in order to find out what extensions need to be turned on or off.
That`s it, keep an eye on www.it-tutorials.net as we will continue with more tutorials . On our website you will find a lot of tips and tricks for any IT field !