How to suppress the "Division by zero" error and set the result to null for the whole application?

Question

How to suppress the "Division by zero" error and set the result to null for the whole application? By saying "for the whole application", I mean it is not for a single expression. Instead, whenever a "Division by zero" error occurs, the result is set to null automatically and no error will be thrown.

Answer 1

This should do the trick.

$a = @(1/0); 
if(false === $a) {
  $a = null;
}
var_dump($a);

outputs

NULL

See the refs here error controls.

EDIT

function division($a, $b) {
    $c = @(a/b); 
    if($b === 0) {
      $c = null;
    }
    return $c;
}

In any place substitute 1/0 by the function call division(1,0).

EDIT - Without third variable

function division($a, $b) {         
    if($b === 0)
      return null;

    return $a/$b;
}