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PHP PHP Basics (Retired) PHP Datatypes PHP Constants

Posted by Adam Tatusko
Adam Tatusko
16,589 Points

isset($bar);

$bar = 0;
isset($bar);

will return TRUE, not FALSE.

3 Answers

Chris Shaw
Chris Shaw
26,676 Points
Chris Shaw
Chris Shaw
26,676 Points

The isset function checks if the given variable exists in the current scope, I assume by the code you have above you're wanting to check if the value of $bar equals 0 which you can do by using an equality operator.

<?php

$bar = 0;

if ($bar === 0) {
  echo '$bar does equal 0';
} else {
  echo '$bar does not equal 0';
}
Adam Tatusko
Adam Tatusko
16,589 Points
Adam Tatusko
Adam Tatusko
16,589 Points

Thanks for the info, but I was just commenting on the incorrect teaching at the beginning of the associated PHP video on PHP Constants.

Chris Shaw
Chris Shaw
26,676 Points
Chris Shaw
Chris Shaw
26,676 Points

I just looked at the video and indeed it's using the isset function is the wrong way. /cc Hampton Paulk

Hampton Paulk
Hampton Paulk
5,093 Points

I will fix. Good Catch.

Ryan Hellerud
Ryan Hellerud
3,635 Points
Ryan Hellerud
Ryan Hellerud
3,635 Points

also where are the notes with the docs you say you leave docs in notes but I dont see them /cc Hampton Paulk