This repository demonstrates a subtle bug in PHP related to the isset() function, numeric array keys, and values that evaluate to false (such as 0 and false). The isset() function doesn't reliably ...

This repository demonstrates a subtle issue with PHP's isset() function. The isset() function is often used to check if a variable is set and is not NULL. However, its behavior can be surprising when ...

" isset Determine if a variable is set and is not NULL . " Suppose we have a HTML form and we want to know whether that form has been submitted or not we have to do a basic simple step .