Php function argument error suppression, empty() isset() emulation

Question

I\'m pretty sure the answer to this question is no, but in case there\'s some PHP guru

is it possible to write a function in a way where invalid arguments or non exi

Answer 1

No, because this isn't really anything to do with the function; the error is coming from attempting to de-reference a non-existent array key. You can change the warning level of your PHP setup to surpress these errors, but you're better off just not doing this.

Having said that, you could do something like

function safeLookup($array, $key)
{
  if (isset($array, $key))
    return $array[$key];

  return 0;
}

And use it in place of array key lookup

defaultValue(safeLookup($foo, "bar"), "baz);

Now I need to take a shower :)