Description:
------------
at

http://www.php.net/manual/en/ref.errorfunc.php

the example uses raw integers instead of error constants:

   $errortype = array (
               1    =>  "Error",
               2    =>  "Warning",
               4    =>  "Parsing Error",
               8    =>  "Notice",
               16  =>  "Core Error",
               32  =>  "Core Warning",
               64  =>  "Compile Error",
               128  =>  "Compile Warning",
               256  =>  "User Error",
               512  =>  "User Warning",
               1024 =>  "User Notice"
               );

This should use E_ERROR, E_WARNING, etc.  Using the raw numbers is not best practice, and should not be encouraged.