Custom error handler for PHP

Question

I've written a custom Error handler for use in PHP. What it does is simply capture PHP errors, and logs them using Monolog.

It works, but I can't help that it has too much stuff inside. I could remove the error levels that are not handled by set_error_handler but that's guaranteed to lead to a developer that spends 2 hours wondering "why E_ERRORs are not getting logged"...

Could this function be improved somehow?

set_error_handler(function($errno ,$errstr,$errfile ,$errline, $errcontext) {
 // When we use the error supressing operator (@) 
 // error_reporting is temporarily set to 0
 // Do not log anything for that case
 if(ini_get('error_reporting')==0){return;}
 $halt = FALSE;
 // http://php.net/manual/en/errorfunc.constants.php
 switch($errno){
 case E_USER_ERROR:
 case E_RECOVERABLE_ERROR:
 $halt = true;
 $logType = 'error';
 break;
 case E_WARNING:
 case E_USER_WARNING:
 case E_STRICT:
 case E_DEPRECATED:
 $logType = 'warning';
 break;
 case E_NOTICE:
 case E_USER_NOTICE:
 $logType = 'notice';
 break;
 // The following error types cannot be caught by set_error_handler
 // Adding them for reference only
 case E_CORE_WARNING:
 case E_COMPILE_ERROR:
 case E_COMPILE_WARNING:
 case E_CORE_ERROR:
 case E_ERROR:
 case E_PARSE:
 return FALSE;
 // We should never reach this case. But you never know
 case E_ALL:
 default:
 $logType = 'warning';
 }
 Logger::{$logType}($errstr, $errcontext);
 // Halt the execution for errors that should halt
 if($halt)
 exit($errno);
});

Answer 1

Look here it is already tested on live projects error catcher.

Fatal errors can be catch only by 'register_shutdown_function'

You do not track uncatched Exceptions, it can be done by 'set_exception_handler'

If code runout all memory it will not able to log error, but if you does not catch Fatal errors so it is not your case.