Powershell delete active directory user account...a little bit better

Hi mates,
how many times you asked to yourself : how can I delete active directory users ?
How can I do it storing administrative credentials and converting the result in JSON format ?
A friend of mine asked me a simple script to should be executed in a mixed environment : Linux/PHP and Windows.
He has to delete an active directory user account having as a back result, a JSON converted string.
Additionally he asked me to capture eventual errors
Let's see what I've done....quickly :





No complications, no tricks, only the essential.
Hope this helps.
See you soon