‘php.exe’ is not recognized as an internal or external command, operable program or batch file

‘php.exe’ is not recognized as an internal or external command, operable program or batch file.

Why does that error occur even though I've added PHP to my environment variables?

My environment variable PATH is shown below:

C:\Program Files\NVIDIA Corporation\PhysX\Common;C:\Program Files\Common Files\Microsoft Shared\Windows Live;C:\Program Files\PC ............... Files\QTSystem\;A:\xampp\php\php.exe

I'm using Windows 7.

A:\xampp\php\php.exe

The PATH environment variable must contain paths only, not file names.

Make that

A:\xampp\php

it is very easy to do
You need to also add php.exe
Adding this path:
windows key + pause
click on Advance system settings
click Environment Variable
System variables part -> Path -> Edit and the add
C:\wamp\bin\php\php5.3.8;
close you cmd prompt if its open
It's Done!

I think you need to change it to A:\xampp\php\ and just leave it there, then it will search the directory for the file, also: have you tried calling just php instead of php.exe and check that the directory is correct.