[Narf]

Reduce the number of equal to sign to two instead of 3.
change 
if ($result->num_rows() === 0) 

to:

if ($result->num_rows() == 0) 

Boolen 0 is false and 1 is true. 


 

This won't change anything.

It's not the num_rows() return value that's the problem.
It's that $result is not an object at all, meaning that the query errored.