PHP: Add days to a date.

This is a short tutorial on how to add days to a given date using PHP.

Fix: Uncaught ReferenceError: $ is not defined

This is a guide on how to fix a common error that occurs whenever the JQuery library hasn’t been loaded properly.

PHP: Receive raw POST data.

This is a short guide on how to receive raw POST data in PHP.

Where is the Audi windshield washer located?

How to find the windshield washer reservoir on a 2017 Audi A5 Sportback.

PHP: Determine if a number is odd or even.

This is a short PHP tutorial on how to determine if a number is odd or even.