Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

PHP PHP Basics (Retired) PHP Datatypes Booleans

why var_dump returns false if empty string or 0

why isn't it called is_empty or is_zero? I do not understand the purpose of an empty string being false.

1 Answer

It is to do with a concept where values are "truthy" or "falsey".

Check out this link to see how different values are evaluated in PHP.

http://php.net/manual/en/types.comparisons.php