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 Using PHP with MySQL Querying the Database with PHP Retrieving the Result Set

Posted by Justin Vail
Justin Vail
9,841 Points

error-on-$results-variable

This is the error message I get in my browser when I attempt var_dump(results); "Notice: Undefined variable: results in C:\xampp\htdocs\shirts4mike\database.php on line 19 NULL"

1 Answer

Carlos Federico Puebla Larregle
Carlos Federico Puebla Larregle
21,074 Points
Carlos Federico Puebla Larregle
Carlos Federico Puebla Larregle
21,074 Points

Have you defined the variable named "results" before using it as an argument in that "var_dump()"?