Question

I have this PHP code. Whenever y becomes zero, it shows a warning instead of catching the exception. Is there anything wrong with my code?

try
{
    return($x % $y); 
    throw new Exception("Divide error..");
}
catch(Exception $e){
    echo "Exception:".$e->getMessage();
}

I got this warning:

Warning: Division by zero in file.php

The catch block is not run. What am I doing wrong?

Answer 1

A warning is not an exception. Warnings cannot be caught with exception handling techniques. Your own exception is never thrown since you always return before.

You can suppress warnings using the @ operator like @($x % $y), but what you should really do is make sure $y does not become 0.

I.e.:

if (!$y) {
    return 0; // or null, or do something else
} else {
    return $x % $y;
}