Zeev Suraski wrote:argument makes a great deal of sense. As a matter of fact, in practice - you can easily get forward-compatibility. Just supply it in both PHP 4 and 5 - extra arguments are ignored anyway (just provide @ to make sure of that).
Just checked it and no: set_error_handler does _not_ ignore the additional parameter, it fails and does _not_ install the handler on PHP4. Leave out E_ALL and it works like a charm. Am I missing something here?
Script used to test: function handler() { echo "error!\n"; }
@set_error_handler("handler", E_ALL);
$a / 0;
Hrm, you're absolutely right, I erroneously mixed built-in and userspace function behavior. But my answer still stands - I still think that adding an extra argument is still the best solution, and that forward-compatibility ranks far below functionality in terms of importance.
Sorry for the messup though.
Zeev
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