Q:

Site error: Accessing php project

I am facing below error on access any php page(except default) in root directory of xampp  page and I included the below  required dll in the project directory but following error is still  displayed.   
Site error: the file C:\xampp\htdocs\index.php requires the ionCube PHP Loader ioncube_loader_win_5.5.dll to be installed by the website operator. If you are the website operator please use the ionCube Loader Wizard to assist with installation.

A:

You should download loader from http://www.ioncube.com/loaders.php , unpack it, and installer helps you to install it and tells you what exactly you should change. 
Also you should install loaders that are compatible with your installation - VC11/VC9 or Non-TS/TS or 32bit/64 bit are the choices so you need to check if you installed correct loader 
Detailed instruction:
Open http://www.ioncube.com/loaders.php , and installed correct version in ZIP format, for example Windows VC11 (32 bits). Unzip it and copy directory ioncube to C:\xampp\htdocs
Ensure you have xampp turned on
Now open http://localhost/ioncube/loader-wizard.php in your browser and you will get detailed instructions how to install, what should be fixed , where to copy files , what to edit and so on.

