Top "Program-flow" questions

PHP "or" Syntax

I've seen this a lot: $fp = fopen($filepath, "w") or die(); But I can't seem to find any real documentation …

php syntax program-flow control-structure or-operator
Do we need to create a error handler for each subroutine?

I copy a piece of code from SO as an example. The subroutine contains an error handler. Should one make …

vba error-handling program-flow
Programming style: should you return early if a guard condition is not satisfied?

One thing I've sometimes wondered is which is the better style out of the two shown below (if any)? Is …

language-agnostic control-flow program-flow
Should one use `if ($a != NULL)` or `if ($a !== NULL)` to control program flow?

This is perhaps a painfully basic question to answer, but I'm wondering about performance issues regarding using PHP's if identical !== …

php performance if-statement micro-optimization program-flow