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PHP Integrating PHP with Databases Limiting Records in SQL Adding Pagination Links

Zachary Baker
PLUS
Zachary Baker
Courses Plus Student 11,504 Points

adding pagination to my page.

Notice: Use of undefined constant INPUT - assumed 'INPUT' in /home/treehouse/workspace/catalog.php on line 21

Notice: Use of undefined constant FILTER_SANITIZE_INT - assumed 'FILTER_SANITIZE_INT' in /home/treehouse/workspace/catalog.php on line 21

Warning: filter_input() expects parameter 1 to be integer, string given in /home/treehouse/workspace/catalog.php on line 21 Personal Media Library

here is my ws: https://w.trhou.se/kx7mpm5jgx