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;
- Chris
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