ErrorHandling php

I wrote an error handler to handle different kind of errors in php(even parse errors etc.).

Question:

As I now can detect an errortype(the constant) it is necessary to identify which errors I should allow or not and in which case do a gentle shutdown. If I look at http://www.php.net/manual/en/errorfunc.constants.php I see all the different constants for different kind of errors.

The question is:

1)Is there some kind of relation between these constants for error handling. Lets say above a level I know that I dont want to print the error on my screen etc? Or do I have to set this manually for every error-constant(seems like it)?

2) How to provoke every error on the screen example without using trigger_error() or user_error()? Is there some kind of list to produce those errors and which ones I can produce with code?

Cheers and thanks a lot for answers.

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You can group all the notice, warning and error constants together like this:

notice : 8 + 1024 + 2048 + 8192 + 16384 = 27656 0x6c08
warning: 2 + 32 + 128 + 512             = 674   0x2a2
error  : 1 + 16 + 64 + 256 + 4096       = 4433  0x1151

You could also add them by explicitly using the constant names, eg E_ERROR , etc.

So:

$is_notice  = $code & 0x6c08 != 0;
$is_warning = $code & 0x2a2 != 0;
$is_error = $code & 0x1151 != 0;

As for your second question, are you looking for code that would trigger the above distinct levels?

$f = fopen($a, 'r'); // notice + warning
$f->read(); // error

include 'script_with_parse_error.php'; // e_parse

function test(Iterator $i) { }
test(123); // e_recoverable_error

function modify(&$i) { ++$i; }
modify(123); // e_strict

$x = split(',', ''); // e_deprecated

The E_USER events can only be generated with trigger_error() of course.

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