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 Enhancing a Simple PHP Application Adding Search: Controller & View Creating the Search Page

Problem with file shirts.php

Dear sirs,

Why do I keep getting the following error on this page?

Notice: Undefined variable: products in C:\xampp\htdocs\shirts\shirts.php on line 18

Warning: Invalid argument supplied for foreach() in C:\xampp\htdocs\shirts\shirts.php on line 18

Most likely, from what I'm seeing with your error messages, PHP thinks that you haven't created the $products array yet. This is why you're getting the first error. I'm pretty sure that the second error is caused by basically the same thing.

In order to really understand the problem, though, I think I'd have to take a look at your PHP code. Could you post it here? Thanks!

2 Answers

Hey Gabriela, the first error means you haven't defined your variable. In PHP terms, this means you have to initalize it before it can be used. I'm not sure what your code looks like, but you can simply add in $products = " "; to set the variable to nothing. This may solve your problem for the invalid argument, too. I'm not sure what your foreach() loop looks like, either.

Thanks a lot Alex!

Same as the comment above. Either the variable products doesn't exist or is empty. Posting your code would help us figure out what exactly is the problem