Exception::__clone
If you want to control when the exception will be display or when not, you can change the value and enter if condition statement:
<?php
function lockdown($exception)
{
echo " <strong>lockdown:</strong> " , $exception->getMessage();
}
$lockdown = true; //you can change to false if you want to disable the lockdown.
if ($lockdown){
set_exception_handler('lockdown');
throw new Exception('the website is under construction, we will be back soon');
}
?>
the output will be:
lockdown: the website is under construcytion, we will be back soon
and nothing else will be shown in the entire website, just the lockdown comment.
ErrorException
소개
An Error Exception.
클래스 개요
ErrorException
ErrorException
extends
Exception
{
/* Properties */
/* Methods */
public __construct
([ string $message
[, int $code
[, int $severity
[, string $filename
[, int $lineno
]]]]] )
/* Inherited methods */
}프로퍼티
- severity
-
The severity of the exception
예제
Example #1 Use set_error_handler() to change error messages into ErrorException.
<?php
function exception_error_handler($errno, $errstr, $errfile, $errline ) {
throw new ErrorException($errstr, 0, $errno, $errfile, $errline);
}
set_error_handler("exception_error_handler");
/* Trigger exception */
strpos();
?>
위 예제의 출력 예시:
Fatal error: Uncaught exception 'ErrorException' with message 'Wrong parameter count for strpos()' in /home/bjori/tmp/ex.php:8
Stack trace:
#0 [internal function]: exception_error_handler(2, 'Wrong parameter...', '/home/bjori/php...', 8, Array)
#1 /home/bjori/php/cleandocs/test.php(8): strpos()
#2 {main}
thrown in /home/bjori/tmp/ex.php on line 8
Table of Contents
- ErrorException::__construct — Construct the exception
- ErrorException::getSeverity — Gets the exception severity
add a note
User Contributed NotesErrorException
gozlan at nett dot co dot il
02-Jun-2009 07:00
02-Jun-2009 07:00
e dot sand at elisand dot com
27-Feb-2009 04:11
27-Feb-2009 04:11
If you're looking for a quick one-line way to change all errors in to Exceptions, you can do it this way:
set_error_handler(create_function('$a, $b, $c, $d', 'throw new ErrorException($b, 0, $a, $c, $d);'), E_ALL);
using create_function() saves you a few lines of code by embedding it all in to a single line, plus saves your namespace from a function name that should only ever be called in the event of an error (this saves from direct invocation).
luke at cywh dot com
24-Feb-2009 04:56
24-Feb-2009 04:56
To add to the comments made by chris AT cmbuckley DOT co DOT uk about the ErrorException problem with args:
I noticed that the problem is in the ErrorException class itself, not the Exception class. When using just the exception class, it's no longer an issue. Besides the args problem, the only difference between Exception and ErrorException in the stack trace is that the args are left out of the error handler exception function. I'm not sure if this was on purpose or not, but it shouldn't hurt to show this information anyway.
So instead of using this broken extended class, you can ignore it and make your own extended class and avoid the problem all together:
<?php
header('Content-Type: text/plain');
class ErrorHandler extends Exception {
protected $severity;
public function __construct($message, $code, $severity, $filename, $lineno) {
$this->message = $message;
$this->code = $code;
$this->severity = $severity;
$this->file = $filename;
$this->line = $lineno;
}
public function getSeverity() {
return $this->severity;
}
}
function exception_error_handler($errno, $errstr, $errfile, $errline ) {
throw new ErrorHandler($errstr, 0, $errno, $errfile, $errline);
}
set_error_handler("exception_error_handler", E_ALL);
function A() {
$foo->bar; // Purposely cause error
}
function B($c) {
A();
}
try {
B('foobar');
} catch (Exception $e) {
var_dump($e->getTrace());
}
?>
The only thing I wish I could do was remove the entry for the error handler function because it's quite irrelevant. Maybe that's what they were trying to do with the ErrorException class? Either way, you can't change it because the trace functions are final, and the variable is private.
chris AT cmbuckley DOT co DOT uk
13-Nov-2008 09:24
13-Nov-2008 09:24
The backtrace of ErrorException is broken in PHP 5.2 (listed at http://bugs.php.net/bug.php?id=46449 and explained at http://bugs.php.net/bug.php?id=45895#c140511).
A simple fix for your exception handler:
<?php
$backtrace = $exception->getTrace();
if ($exception instanceof ErrorException) {
for ($i = count($backtrace) - 1; $i > 0; --$i) {
$backtrace[$i]['args'] = $backtrace[$i - 1]['args'];
}
}
?>
makariverslund at gmail dot com
10-Sep-2008 10:08
10-Sep-2008 10:08
Building upon the notes present, here is a set of functions that transforms the error into an exception and reports the error to screen / log depending upon the PHP ini settings.
//Begin helper function definition
function ReportError ($msg)
{
// be sure that the supplied parameter is a string and not empty
if (empty ($msg) || !is_string ($msg))
{
throw new ErrorException ('Invalid parameter supplied to ReportError', 0, E_ERROR);
}
// retrieve error settings
$display = strtolower (ini_get ('display_errors'));
$log = strtolower (ini_get ('log_errors'));
// check if we're displaying errors
if ($display === 'on' || $display === '1' || $display === 1 || $display === 'true' || $display === true)
{
echo $msg;
}
// check if we're logging errors
if ($log === 'on' || $log === '1' || $log === 1 || $log === 'true' || $log === true)
{
$result = error_log ($msg);
// check for error while logging
if (!$result)
{
throw new ErrorException ('Attempt to write message to error log failed in ReportError', 0, E_ERROR);
}
}
}
//Begin main function definition
function ErrorsAsExceptions ($level, $msg, $fileName, $lineNumber)
{
// do nothing if error reporting is turned off
if (error_reporting () === 0)
{
return;
}
// be sure received error is supposed to be reported
if (error_reporting () & $level)
{
try
{
// report error to appropriate channels
ReportError ($reportMsg);
}
catch (ErrorException $e)
{
// ignore errors while reporting
}
// go ahead and throw the exception
throw new ErrorException ($msg, 0, $level, $fileName, $lineNumber);
}
}
troelskn at gmail dot com
29-Jul-2008 08:08
29-Jul-2008 08:08
The following snippet installs an error-handler that turns errors into exceptions. It respects error-reporting level, so that you can still use error-suppression:
<?php
function exceptions_error_handler($severity, $message, $filename, $lineno) {
if (error_reporting() == 0) {
return;
}
if (error_reporting() & $severity) {
throw new ErrorException($message, 0, $severity, $filename, $lineno);
}
}
set_error_handler('exceptions_error_handler');
?>