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! While you're at it, check out some resources Treehouse students have shared here.

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

Posted by Steve Jones
.a{fill-rule:evenodd;}techdegree
Steve Jones
Java Web Development Techdegree Student 78 Points

What is callable and closure?

I am confused here about callable and closure. I have read the php documentation but can't understand, why we need such two functions in our programming. I also have checked the video on youtube regarding this but still not understand, if someone can tell me with the real live example, this would be fine for me.