I've been working on a PHP project and I'm facing an issue with testing for the existence of a variable. From what I've read, people suggest using the isset() function for this purpose. However, I've noticed that isset() doesn't always work as expected. It sometimes returns false even when I'm sure the variable exists.
I need a reliable way to check if a variable exists in PHP. Can anyone suggest an alternative method that is more accurate than isset()? I would appreciate any help or insights you can provide. Thank you!