Return to the PHP Code and Syntax Checker

About PHP Code Checker was built out of frustration for silly mistakes. I'd make them and even programmers I knew that were being paid high 5 figures were making them. Many of these mistakes went undetected: an IDE would not catch them either. Thus, I gathered up the most common mistakes I've made, focusing on those mistakes that wouldn't already be found, ensuring the tool would add value for everyone.

Finally, I designed it to be very fast, simple, and powerful. I was inspired by the very straight-forward nature of, which is a much better website and incredibly powerful (and useful).

Why is it Free?

If you want to pay for it, consider buying my PHP book or turn off AdBlock/uBlock for this site. It makes no sense to charge for the service. It's about helping out developers so they can keep succeeding in creating great websites and services.

Seriously, can't I just tip you a couple of bucks?

PayPal Tip

BTC Tip: 18qUgh8KRo7Mwb22v3KfyaYQJiHvMmLkQH

Created by Mario Lurig

What version of PHP?

PHP Syntax Check (php -l) used on this site is running version 5.6.10, 7.4, or 8.0.