note 98051 added to function.set-error-handler

At work I have some code with errors that uncatched are the causes of integrity loss (people calling web services with file_get_contents that fails silently and afterwards insert garbage in the database). 

here is the solution I found to transform a specific set of errors into exception and afterwards be able to selectively act (with the error code) regarding categories :  

<?
ini_set('error_reporting',E_ALL^E_NOTICE);

## first 10 bits reserved for the initial error number
define('EMASK',(~0)<<10);
define('ECODEMASK',~EMASK);
## categories 
define('IOERROR', 1<<10);
define('EMPTYPARMS', 1<<11);
define('FAILURE', 1<<12);
## string error patterns => code 

$catch_me=array(
    "/^(file_get_contents)\((.*)\).*failed to open stream: (.*)/ " => 
        array ( 'mesg' => "IO::Failed to open stream with",
                'code' => IOERROR | FAILURE
        ),
    "/^fopen\(.*\): Filename cannot be empty/" => 
        array( 'msg' => "Parameters::empty",
                'code' => EMPTYPARMS
        )
    );
function error_2_exception($errno, $errstr, $errfile, $errline,$context) {
    global $catch_me;
    foreach ($catch_me as $regexp  => $res) {
        if(preg_match($regexp,$errstr,$match)){
            throw new Exception($res['mesg'],$res['code']|( $errno & EMASK ) );
        }
    }
    /* switch back to PHP internal error handler  */
    return false;
}
## => want to catch this one
$f=file_get_contents("mlsdkfm");
## dont want to break existing wrong behaviour yet (so not caught)
$f=file_get_contents('');
## magic
set_error_handler("error_2_exception");
## behaviour remains the same
$f=file_get_contents('');
try { 
## web services that dont work now raise an exception \o/
$f=file_get_contents("mlsdkfm");
} catch(Exception $e) {
## and I can group my exception by category
    echo ( $e->getCode() & FAILURE )  ? "\nEPIC FAIL\n" : "\nbegnine";
}

?>
----
Server IP: 89.31.146.176
Probable Submitter: 213.41.242.148
----
Manual Page -- http://www.php.net/manual/en/function.set-error-handler.php
Edit        -- https://master.php.net/note/edit/98051
Del: integrated  -- https://master.php.net/note/delete/98051/integrated
Del: useless     -- https://master.php.net/note/delete/98051/useless
Del: bad code    -- https://master.php.net/note/delete/98051/bad+code
Del: spam        -- https://master.php.net/note/delete/98051/spam
Del: non-english -- https://master.php.net/note/delete/98051/non-english
Del: in docs     -- https://master.php.net/note/delete/98051/in+docs
Del: other reasons-- https://master.php.net/note/delete/98051
Reject      -- https://master.php.net/note/reject/98051
Search      -- https://master.php.net/manage/user-notes.php