Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community!

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

PHP PHP Arrays and Control Structures PHP Conditionals Conditionals

277 Points

how can we have an if statement with no condition? If just says if ($username) ?

What does this mean?

1 Answer

Steven Parker
Steven Parker
227,167 Points

By itself, an empty string is considered "falsey"; but if the string contains any characters, it will be considered "truthy".

So this test is effectively checking "if $username is not empty".