PHP (tag)

Explanation of PHP functions filectime(), fileatime(), and filemtime() and their differences in managing file timestamps.

A guide to 30 surprising and non-obvious behaviors and pitfalls in PHP.

Understanding the difference between declaring PHP constants using the const keyword and the define() function, and the features and limitations of each method.

A guide to PHP syntax changes across versions 5.3 through 8.5, highlighting what’s possible in each version and when polyfills or legacy syntax are needed.