/usr/share/php/Symfony/Component/Debug/ErrorHandler.php is in php-symfony-debug 2.3.21+dfsg-4+deb8u3.
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/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Debug;
use Symfony\Component\Debug\Exception\FatalErrorException;
use Symfony\Component\Debug\Exception\ContextErrorException;
use Symfony\Component\Debug\Exception\DummyException;
use Psr\Log\LoggerInterface;
/**
* ErrorHandler.
*
* @author Fabien Potencier <fabien@symfony.com>
* @author Konstantin Myakshin <koc-dp@yandex.ru>
*/
class ErrorHandler
{
const TYPE_DEPRECATION = -100;
private $levels = array(
E_WARNING => 'Warning',
E_NOTICE => 'Notice',
E_USER_ERROR => 'User Error',
E_USER_WARNING => 'User Warning',
E_USER_NOTICE => 'User Notice',
E_STRICT => 'Runtime Notice',
E_RECOVERABLE_ERROR => 'Catchable Fatal Error',
E_DEPRECATED => 'Deprecated',
E_USER_DEPRECATED => 'User Deprecated',
E_ERROR => 'Error',
E_CORE_ERROR => 'Core Error',
E_COMPILE_ERROR => 'Compile Error',
E_PARSE => 'Parse',
);
private $level;
private $reservedMemory;
private $displayErrors;
/**
* @var LoggerInterface[] Loggers for channels
*/
private static $loggers = array();
/**
* Registers the error handler.
*
* @param int $level The level at which the conversion to Exception is done (null to use the error_reporting() value and 0 to disable)
* @param bool $displayErrors Display errors (for dev environment) or just log they (production usage)
*
* @return ErrorHandler The registered error handler
*/
public static function register($level = null, $displayErrors = true)
{
$handler = new static();
$handler->setLevel($level);
$handler->setDisplayErrors($displayErrors);
ini_set('display_errors', 0);
set_error_handler(array($handler, 'handle'));
register_shutdown_function(array($handler, 'handleFatal'));
$handler->reservedMemory = str_repeat('x', 10240);
return $handler;
}
public function setLevel($level)
{
$this->level = null === $level ? error_reporting() : $level;
}
public function setDisplayErrors($displayErrors)
{
$this->displayErrors = $displayErrors;
}
public static function setLogger(LoggerInterface $logger, $channel = 'deprecation')
{
self::$loggers[$channel] = $logger;
}
/**
* @throws ContextErrorException When error_reporting returns error
*/
public function handle($level, $message, $file = 'unknown', $line = 0, $context = array())
{
if (0 === $this->level) {
return false;
}
if ($level & (E_USER_DEPRECATED | E_DEPRECATED)) {
if (isset(self::$loggers['deprecation'])) {
if (version_compare(PHP_VERSION, '5.4', '<')) {
$stack = array_map(
function ($row) {
unset($row['args']);
return $row;
},
array_slice(debug_backtrace(false), 0, 10)
);
} else {
$stack = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, 10);
}
self::$loggers['deprecation']->warning($message, array('type' => self::TYPE_DEPRECATION, 'stack' => $stack));
}
return true;
}
if ($this->displayErrors && error_reporting() & $level && $this->level & $level) {
// make sure the ContextErrorException class is loaded (https://bugs.php.net/bug.php?id=65322)
if (!class_exists('Symfony\Component\Debug\Exception\ContextErrorException')) {
require __DIR__.'/Exception/ContextErrorException.php';
}
if (!class_exists('Symfony\Component\Debug\Exception\FlattenException')) {
require __DIR__.'/Exception/FlattenException.php';
}
if (PHP_VERSION_ID < 50400 && isset($context['GLOBALS']) && is_array($context)) {
unset($context['GLOBALS']);
}
$exception = new ContextErrorException(sprintf('%s: %s in %s line %d', isset($this->levels[$level]) ? $this->levels[$level] : $level, $message, $file, $line), 0, $level, $file, $line, $context);
// Exceptions thrown from error handlers are sometimes not caught by the exception
// handler, so we invoke it directly (https://bugs.php.net/bug.php?id=54275)
$exceptionHandler = set_exception_handler(function () {});
restore_exception_handler();
if (is_array($exceptionHandler) && $exceptionHandler[0] instanceof ExceptionHandler) {
$exceptionHandler[0]->handle($exception);
if (!class_exists('Symfony\Component\Debug\Exception\DummyException')) {
require __DIR__.'/Exception/DummyException.php';
}
// we must stop the PHP script execution, as the exception has
// already been dealt with, so, let's throw an exception that
// will be caught by a dummy exception handler
set_exception_handler(function (\Exception $e) use ($exceptionHandler) {
if (!$e instanceof DummyException) {
// happens if our dummy exception is caught by a
// catch-all from user code, in which case, let's the
// current handler handle this "new" exception
call_user_func($exceptionHandler, $e);
}
});
throw new DummyException();
}
}
return false;
}
public function handleFatal()
{
if (null === $error = error_get_last()) {
return;
}
$this->reservedMemory = '';
$type = $error['type'];
if (0 === $this->level || !in_array($type, array(E_ERROR, E_CORE_ERROR, E_COMPILE_ERROR, E_PARSE))) {
return;
}
if (isset(self::$loggers['emergency'])) {
$fatal = array(
'type' => $type,
'file' => $error['file'],
'line' => $error['line'],
);
self::$loggers['emergency']->emerg($error['message'], $fatal);
}
if (!$this->displayErrors) {
return;
}
// get current exception handler
$exceptionHandler = set_exception_handler(function () {});
restore_exception_handler();
if (is_array($exceptionHandler) && $exceptionHandler[0] instanceof ExceptionHandler) {
$level = isset($this->levels[$type]) ? $this->levels[$type] : $type;
$message = sprintf('%s: %s in %s line %d', $level, $error['message'], $error['file'], $error['line']);
$exception = new FatalErrorException($message, 0, $type, $error['file'], $error['line']);
$exceptionHandler[0]->handle($exception);
}
}
}
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