Comments on: php isset and not empty

By: Andrew Noyes

Andrew Noyes — Mon, 27 Jul 2009 17:48:46 +0000

To expand upon what Harry Walter said, empty() can’t be used on the value returned by any function, be it an object method or a regular function. empty() has some funky behavior because it’s part of the PHP interpreter and is a language component rather than a function, just like echo.

By: Jon Williams

Jon Williams — Sat, 11 Jul 2009 23:30:57 +0000

And then there’s array_key_exists() sigh…

By: Harry Walter

Harry Walter — Sat, 11 Jul 2009 22:12:32 +0000

Bear in mind that you often can’t use empty on the response from and object method unline isset.

For example in symfony if you had a blog object you can do:

if(isset($blog->getTitle()) && $blog->getTitle() != “”){}

But you cannot do if(empty($blog->getTitle())){}