error handling

error.php

<?php

// Original http://codereview.stackexchange.com/questions/10846/could-this-php-error-exception-handling-be-better

error_reporting(~0);
ini_set('display_errors', 0);
ini_set('log_errors', 1);


/* Set the error handler. */
set_error_handler(function ($errno, $errstr, $errfile, $errline) {
    /* Ignore @-suppressed errors */
    if (!($errno & error_reporting())) return;

    $e = array('type'=>$errno,
               'message'=>$errstr,
               'file'=>$errfile,
               'line'=>$errline);
    redirect($e);
});


/* Set the exception handler. */
set_exception_handler(function ($e) {
    $e = array('type'=>$e->getCode(),
               'message'=>$e->getMessage(),
               'file'=>$e->getFile(),
               'line'=>$e->getLine());
    redirect($e);
});


/* Check if there were any errors on shutdown. */
register_shutdown_function(function () {
    if (!is_null($e = error_get_last())) {
        redirect($e);
    }
});


function redirect($e) {
    $now = date('d-M-Y H:i:s');
    $type = format_error_type($e['type']);
    $message = "[$now] $type: {$e['message']} in {$e['file']} on line {$e['line']}\n";
    $error_log_name = ini_get('error_log');
    error_log($message, 3, $error_log_name);

    switch ($e['type']) {
        /* We'll ignore these errors.  They're only here for reference. */
        case E_WARNING:
        case E_NOTICE:
        case E_CORE_WARNING:
        case E_COMPILE_WARNING:
        case E_USER_WARNING:
        case E_USER_NOTICE:
        case E_STRICT:
        case E_RECOVERABLE_ERROR:
        case E_DEPRECATED:
        case E_USER_DEPRECATED:
        case E_ALL:
            break;
        /* Redirect to "oops" page on the following errors. */
        case 0: /* Exceptions return zero for type */
        case E_ERROR:
        case E_PARSE:
        case E_CORE_ERROR:
        case E_COMPILE_ERROR:
        case E_USER_ERROR:
            return header('Location: /oops_page.htm');
    }
}


function format_error_type($type) {
    switch($type) {
        case 0:
            return 'Uncaught exception';
        case E_ERROR: /* 1 */
            return 'E_ERROR';
        case E_WARNING: /* 2 */
            return 'E_WARNING';
        case E_PARSE: /* 4 */
            return 'E_PARSE';
        case E_NOTICE: /* 8 */
            return 'E_NOTICE';
        case E_CORE_ERROR: /* 16 */
            return 'E_CORE_ERROR';
        case E_CORE_WARNING: /* 32 */
            return 'E_CORE_WARNING';
        case E_CORE_ERROR: /* 64 */
            return 'E_COMPILE_ERROR';
        case E_CORE_WARNING: /* 128 */
            return 'E_COMPILE_WARNING';
        case E_USER_ERROR: /* 256 */
            return 'E_USER_ERROR';
        case E_USER_WARNING: /* 512 */
            return 'E_USER_WARNING';
        case E_USER_NOTICE: /* 1024 */
            return 'E_USER_NOTICE';
        case E_STRICT: /* 2048 */
            return 'E_STRICT';
        case E_RECOVERABLE_ERROR: /* 4096 */
            return 'E_RECOVERABLE_ERROR';
        case E_DEPRECATED: /* 8192 */
            return 'E_DEPRECATED';
        case E_USER_DEPRECATED: /* 16384 */
            return 'E_USER_DEPRECATED';
    }
    return $type;
}
?>