[Debug] less intrusive work around for https://bugs.php.net/54275
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@ -4,11 +4,9 @@ CHANGELOG
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2.5.0
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-----
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* added HandledErrorException
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* added ErrorHandler::setFatalErrorExceptionHandler()
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* added UndefinedMethodFatalErrorHandler
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* deprecated ExceptionHandlerInterface
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* deprecated ContextErrorException
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* deprecated DummyException
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2.4.0
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@ -13,9 +13,8 @@ namespace Symfony\Component\Debug;
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use Psr\Log\LogLevel;
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use Psr\Log\LoggerInterface;
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use Symfony\Component\Debug\Exception\ContextErrorException;
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use Symfony\Component\Debug\Exception\FatalErrorException;
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use Symfony\Component\Debug\Exception\DummyException;
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use Symfony\Component\Debug\Exception\HandledErrorException;
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use Symfony\Component\Debug\FatalErrorHandler\UndefinedFunctionFatalErrorHandler;
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use Symfony\Component\Debug\FatalErrorHandler\UndefinedMethodFatalErrorHandler;
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use Symfony\Component\Debug\FatalErrorHandler\ClassNotFoundFatalErrorHandler;
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@ -54,6 +53,8 @@ class ErrorHandler
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private $displayErrors;
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private $caughtOutput = 0;
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/**
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* @var LoggerInterface[] Loggers for channels
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*/
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@ -129,7 +130,7 @@ class ErrorHandler
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}
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/**
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* @throws HandledErrorException When error_reporting returns error
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* @throws ContextErrorException When error_reporting returns error
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*/
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public function handle($level, $message, $file = 'unknown', $line = 0, $context = array())
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{
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@ -159,36 +160,24 @@ class ErrorHandler
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}
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if ($this->displayErrors && error_reporting() & $level && $this->level & $level) {
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// Exceptions thrown from error handlers are sometimes not caught by the exception
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// handler, so we invoke it directly (https://bugs.php.net/bug.php?id=54275)
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$exceptionHandler = set_exception_handler('var_dump');
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restore_exception_handler();
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if (self::$stackedErrorLevels) {
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self::$stackedErrors[] = func_get_args();
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if ($exceptionHandler) {
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if (self::$stackedErrorLevels) {
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self::$stackedErrors[] = func_get_args();
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return true;
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}
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$exception = sprintf('%s: %s in %s line %d', isset($this->levels[$level]) ? $this->levels[$level] : $level, $message, $file, $line);
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$exception = new HandledErrorException($exception, 0, $level, $file, $line, $context);
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$exception->handleWith($exceptionHandler);
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// we must stop the PHP script execution, as the exception has
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// already been dealt with, so, let's throw an exception that
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// will be caught by a dummy exception handler
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set_exception_handler(function (\Exception $e) use ($exceptionHandler) {
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if (!$e instanceof HandledErrorException && !$e instanceof DummyException) {
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// happens if our handled exception is caught by a
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// catch-all from user code, in which case, let the
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// current handler handle this "new" exception
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call_user_func($exceptionHandler, $e);
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}
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});
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throw $exception;
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return true;
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}
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$exception = sprintf('%s: %s in %s line %d', isset($this->levels[$level]) ? $this->levels[$level] : $level, $message, $file, $line);
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$exception = new ContextErrorException($exception, 0, $level, $file, $line, $context);
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if (PHP_VERSION_ID <= 50407 && (PHP_VERSION_ID >= 50400 || PHP_VERSION_ID <= 50317)) {
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// Exceptions thrown from error handlers are sometimes not caught by the exception
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// handler and shutdown handlers are bypassed before 5.4.8/5.3.18.
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// We temporarily re-enable display_errors to prevent any blank page related to this bug.
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$exception->errorHandlerCanary = new ErrorHandlerCanary();
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}
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throw $exception;
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}
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if (isset(self::$loggers['scream']) && !(error_reporting() & $level)) {
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@ -323,23 +312,114 @@ class ErrorHandler
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private function handleFatalError($exceptionHandler, array $error)
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{
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// Let PHP handle any further error
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set_error_handler('var_dump', 0);
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ini_set('display_errors', 1);
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$level = isset($this->levels[$error['type']]) ? $this->levels[$error['type']] : $error['type'];
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$message = sprintf('%s: %s in %s line %d', $level, $error['message'], $error['file'], $error['line']);
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$exception = new FatalErrorException($message, 0, $error['type'], $error['file'], $error['line'], 3);
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foreach ($this->getFatalErrorHandlers() as $handler) {
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if ($ex = $handler->handleError($error, $exception)) {
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$exception = $ex;
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if ($e = $handler->handleError($error, $exception)) {
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$exception = $e;
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break;
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}
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}
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// To be as fail-safe as possible, the FatalErrorException is first handled
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// by the exception handler, then by the fatal error handler. The latter takes
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// precedence and any output from the former is cancelled, if and only if
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// nothing bad happens in this handling path.
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$caughtOutput = 0;
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if ($exceptionHandler) {
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$exception->handleWith($exceptionHandler);
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$this->caughtOutput = false;
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ob_start(array($this, 'catchOutput'));
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try {
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call_user_func($exceptionHandler, $exception);
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} catch (\Exception $e) {
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// Ignore this exception, we have to deal with the fatal error
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}
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if (false === $this->caughtOutput) {
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ob_end_clean();
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}
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if (isset($this->caughtOutput[0])) {
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ob_start(array($this, 'cleanOutput'));
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echo $this->caughtOutput;
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$caughtOutput = ob_get_length();
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}
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$this->caughtOutput = 0;
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}
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if (self::$fatalHandler) {
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call_user_func(self::$fatalHandler, $exception);
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try {
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call_user_func(self::$fatalHandler, $exception);
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if ($caughtOutput) {
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$this->caughtOutput = $caughtOutput;
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}
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} catch (\Exception $e) {
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if (!$caughtOutput) {
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// Neither the exception nor the fatal handler succeeded.
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// Let PHP handle that now.
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throw $exception;
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}
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}
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}
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}
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/**
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* @internal
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*/
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public function catchOutput($buffer)
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{
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$this->caughtOutput = $buffer;
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return '';
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}
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/**
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* @internal
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*/
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public function cleanOutput($buffer)
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{
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if ($this->caughtOutput) {
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// use substr_replace() instead of substr() for mbstring overloading resistance
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$cleanBuffer = substr_replace($buffer, '', 0, $this->caughtOutput);
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if (isset($cleanBuffer[0])) {
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$buffer = $cleanBuffer;
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}
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}
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return $buffer;
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}
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}
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/**
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* Private class used to work around https://bugs.php.net/54275
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*
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* @author Nicolas Grekas <p@tchwork.com>
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*
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* @internal
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*/
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class ErrorHandlerCanary
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{
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private static $displayErrors = null;
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public function __construct()
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{
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if (null === self::$displayErrors) {
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self::$displayErrors = ini_set('display_errors', 1);
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}
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}
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public function __destruct()
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{
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if (null !== self::$displayErrors) {
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ini_set('display_errors', self::$displayErrors);
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self::$displayErrors = null;
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}
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}
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}
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@ -15,9 +15,22 @@ namespace Symfony\Component\Debug\Exception;
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* Error Exception with Variable Context.
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*
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* @author Christian Sciberras <uuf6429@gmail.com>
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*
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* @deprecated since version 2.5, to be removed in 3.0.
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*/
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class ContextErrorException extends HandledErrorException
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class ContextErrorException extends \ErrorException
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{
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private $context = array();
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public function __construct($message, $code, $severity, $filename, $lineno, $context = array())
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{
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parent::__construct($message, $code, $severity, $filename, $lineno);
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$this->context = $context;
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}
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/**
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* @return array Array of variables that existed when the exception occurred
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*/
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public function getContext()
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{
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return $this->context;
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}
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}
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@ -18,7 +18,7 @@ namespace Symfony\Component\Debug\Exception;
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* @author Konstanton Myakshin <koc-dp@yandex.ru>
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* @author Nicolas Grekas <p@tchwork.com>
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*/
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class FatalErrorException extends HandledErrorException
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class FatalErrorException extends \ErrorException
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{
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public function __construct($message, $code, $severity, $filename, $lineno, $traceOffset = null)
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{
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@ -1,86 +0,0 @@
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<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Component\Debug\Exception;
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/**
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* @author Nicolas Grekas <p@tchwork.com>
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*/
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class HandledErrorException extends \ErrorException
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{
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private $handlerOutput = false;
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private $context = array();
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public function __construct($message, $code, $severity, $filename, $lineno, $context = array())
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{
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parent::__construct($message, $code, $severity, $filename, $lineno);
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$this->context = $context;
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}
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/**
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* @return array Array of variables that existed when the exception occurred
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*/
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public function getContext()
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{
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return $this->context;
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}
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public function handleWith($exceptionHandler)
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{
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$this->handlerOutput = false;
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ob_start(array($this, 'catchOutput'));
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call_user_func($exceptionHandler, $this);
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if (false === $this->handlerOutput) {
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ob_end_clean();
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}
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ob_start(array(__CLASS__, 'flushOutput'));
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echo $this->handlerOutput;
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$this->handlerOutput = ob_get_length();
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}
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/**
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* @internal
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*/
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public function catchOutput($buffer)
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{
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$this->handlerOutput = $buffer;
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return '';
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}
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/**
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* @internal
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*/
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public static function flushOutput($buffer)
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{
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return $buffer;
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}
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public function cleanOutput()
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{
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$status = ob_get_status();
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if (isset($status['name']) && __CLASS__.'::flushOutput' === $status['name']) {
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if ($this->handlerOutput) {
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// use substr_replace() instead of substr() for mbstring overloading resistance
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echo substr_replace(ob_get_clean(), '', 0, $this->handlerOutput);
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} else {
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ob_end_flush();
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}
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}
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}
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public function __destruct()
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{
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$this->handlerOutput = 0;
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$this->cleanOutput();
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}
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}
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@ -13,6 +13,7 @@ namespace Symfony\Component\Debug\Tests;
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use Symfony\Component\Debug\DebugClassLoader;
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use Symfony\Component\Debug\ErrorHandler;
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use Symfony\Component\Debug\Exception\ContextErrorException;
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class DebugClassLoaderTest extends \PHPUnit_Framework_TestCase
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{
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@ -77,52 +78,40 @@ class DebugClassLoaderTest extends \PHPUnit_Framework_TestCase
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$this->assertStringMatchesFormat('%aParse error%a', $output);
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}
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/**
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* @expectedException \Symfony\Component\Debug\Exception\HandledErrorException
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*/
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public function testStacking()
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{
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// the HandledErrorException must not be loaded to test the workaround
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// the ContextErrorException must not be loaded to test the workaround
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// for https://bugs.php.net/65322.
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if (class_exists('Symfony\Component\Debug\Exception\HandledErrorException', false)) {
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$this->markTestSkipped('The HandledErrorException class is already loaded.');
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if (class_exists('Symfony\Component\Debug\Exception\ContextErrorException', false)) {
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$this->markTestSkipped('The ContextErrorException class is already loaded.');
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}
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$exceptionHandler = $this->getMock('Symfony\Component\Debug\ExceptionHandler', array('handle'));
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set_exception_handler(array($exceptionHandler, 'handle'));
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$that = $this;
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$exceptionCheck = function ($exception) use ($that) {
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$that->assertInstanceOf('Symfony\Component\Debug\Exception\HandledErrorException', $exception);
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$that->assertEquals(E_STRICT, $exception->getSeverity());
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$that->assertStringStartsWith(__FILE__, $exception->getFile());
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$that->assertRegexp('/^Runtime Notice: Declaration/', $exception->getMessage());
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};
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$exceptionHandler->expects($this->once())
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->method('handle')
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->will($this->returnCallback($exceptionCheck));
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ErrorHandler::register();
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try {
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// Trigger autoloading + E_STRICT at compile time
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// which in turn triggers $errorHandler->handle()
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// that again triggers autoloading for HandledErrorException.
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// that again triggers autoloading for ContextErrorException.
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// Error stacking works around the bug above and everything is fine.
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eval('
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namespace '.__NAMESPACE__.';
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class ChildTestingStacking extends TestingStacking { function foo($bar) {} }
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');
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$this->fail('ContextErrorException expected');
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} catch (ContextErrorException $exception) {
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// if an exception is thrown, the test passed
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restore_error_handler();
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restore_exception_handler();
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$this->assertEquals(E_STRICT, $exception->getSeverity());
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$this->assertStringStartsWith(__FILE__, $exception->getFile());
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$this->assertRegexp('/^Runtime Notice: Declaration/', $exception->getMessage());
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} catch (\Exception $e) {
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restore_error_handler();
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restore_exception_handler();
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throw $e;
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}
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restore_error_handler();
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restore_exception_handler();
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}
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/**
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@ -12,7 +12,7 @@
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namespace Symfony\Component\Debug\Tests;
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use Symfony\Component\Debug\ErrorHandler;
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use Symfony\Component\Debug\Exception\HandledErrorException;
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use Symfony\Component\Debug\Exception\ContextErrorException;
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/**
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* ErrorHandlerTest
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@ -46,42 +46,33 @@ class ErrorHandlerTest extends \PHPUnit_Framework_TestCase
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public function testNotice()
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{
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$exceptionHandler = $this->getMock('Symfony\Component\Debug\ExceptionHandler', array('handle'));
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set_exception_handler(array($exceptionHandler, 'handle'));
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$that = $this;
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$exceptionCheck = function ($exception) use ($that) {
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$that->assertInstanceOf('Symfony\Component\Debug\Exception\HandledErrorException', $exception);
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$that->assertEquals(E_NOTICE, $exception->getSeverity());
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$that->assertEquals(__FILE__, $exception->getFile());
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$that->assertRegexp('/^Notice: Undefined variable: (foo|bar)/', $exception->getMessage());
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$that->assertArrayHasKey('foobar', $exception->getContext());
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$trace = $exception->getTrace();
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$that->assertEquals(__FILE__, $trace[0]['file']);
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$that->assertEquals('Symfony\Component\Debug\ErrorHandler', $trace[0]['class']);
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$that->assertEquals('handle', $trace[0]['function']);
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$that->assertEquals('->', $trace[0]['type']);
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$that->assertEquals(__FILE__, $trace[1]['file']);
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$that->assertEquals(__CLASS__, $trace[1]['class']);
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$that->assertEquals('triggerNotice', $trace[1]['function']);
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$that->assertEquals('::', $trace[1]['type']);
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$that->assertEquals(__CLASS__, $trace[2]['class']);
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$that->assertEquals('testNotice', $trace[2]['function']);
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$that->assertEquals('->', $trace[2]['type']);
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};
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$exceptionHandler->expects($this->once())
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->method('handle')
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->will($this->returnCallback($exceptionCheck));
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ErrorHandler::register();
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try {
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self::triggerNotice($this);
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} catch (HandledErrorException $e) {
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$this->fail('ContextErrorException expected');
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} catch (ContextErrorException $exception) {
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// if an exception is thrown, the test passed
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restore_error_handler();
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$this->assertEquals(E_NOTICE, $exception->getSeverity());
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$this->assertEquals(__FILE__, $exception->getFile());
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$this->assertRegexp('/^Notice: Undefined variable: (foo|bar)/', $exception->getMessage());
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$this->assertArrayHasKey('foobar', $exception->getContext());
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$trace = $exception->getTrace();
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$this->assertEquals(__FILE__, $trace[0]['file']);
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$this->assertEquals('Symfony\Component\Debug\ErrorHandler', $trace[0]['class']);
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$this->assertEquals('handle', $trace[0]['function']);
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$this->assertEquals('->', $trace[0]['type']);
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$this->assertEquals(__FILE__, $trace[1]['file']);
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$this->assertEquals(__CLASS__, $trace[1]['class']);
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$this->assertEquals('triggerNotice', $trace[1]['function']);
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$this->assertEquals('::', $trace[1]['type']);
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$this->assertEquals(__CLASS__, $trace[2]['class']);
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$this->assertEquals('testNotice', $trace[2]['function']);
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$this->assertEquals('->', $trace[2]['type']);
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} catch (\Exception $e) {
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restore_error_handler();
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|
@ -38,11 +38,12 @@ class ErrorsLoggerListener implements EventSubscriberInterface
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{
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if (null !== $this->logger) {
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ErrorHandler::setLogger($this->logger, $this->channel);
|
||||
$this->logger = null;
|
||||
}
|
||||
}
|
||||
|
||||
public static function getSubscribedEvents()
|
||||
{
|
||||
return array(KernelEvents::REQUEST => 'injectLogger');
|
||||
return array(KernelEvents::REQUEST => array('injectLogger', 2048));
|
||||
}
|
||||
}
|
||||
|
@ -35,11 +35,13 @@ class FatalErrorExceptionsListener implements EventSubscriberInterface
|
||||
{
|
||||
if ($this->handler) {
|
||||
ErrorHandler::setFatalErrorExceptionHandler($this->handler);
|
||||
$this->handler = null;
|
||||
}
|
||||
}
|
||||
|
||||
public static function getSubscribedEvents()
|
||||
{
|
||||
return array(KernelEvents::REQUEST => 'injectHandler');
|
||||
// Don't register early as e.g. the Router is generally required by the handler
|
||||
return array(KernelEvents::REQUEST => array('injectHandler', 8));
|
||||
}
|
||||
}
|
||||
|
@ -18,7 +18,6 @@ use Symfony\Component\HttpKernel\Controller\ControllerReference;
|
||||
use Symfony\Component\HttpKernel\KernelEvents;
|
||||
use Symfony\Component\HttpKernel\Event\GetResponseForExceptionEvent;
|
||||
use Symfony\Component\EventDispatcher\EventDispatcherInterface;
|
||||
use Symfony\Component\Debug\Exception\HandledErrorException;
|
||||
|
||||
/**
|
||||
* Implements the inline rendering strategy where the Request is rendered by the current HTTP kernel.
|
||||
@ -87,15 +86,10 @@ class InlineFragmentRenderer extends RoutableFragmentRenderer
|
||||
} catch (\Exception $e) {
|
||||
// we dispatch the exception event to trigger the logging
|
||||
// the response that comes back is simply ignored
|
||||
if (isset($options['ignore_errors']) && $options['ignore_errors']) {
|
||||
if ($e instanceof HandledErrorException) {
|
||||
$e->cleanOutput();
|
||||
}
|
||||
if ($this->dispatcher) {
|
||||
$event = new GetResponseForExceptionEvent($this->kernel, $request, HttpKernelInterface::SUB_REQUEST, $e);
|
||||
if (isset($options['ignore_errors']) && $options['ignore_errors'] && $this->dispatcher) {
|
||||
$event = new GetResponseForExceptionEvent($this->kernel, $request, HttpKernelInterface::SUB_REQUEST, $e);
|
||||
|
||||
$this->dispatcher->dispatch(KernelEvents::EXCEPTION, $event);
|
||||
}
|
||||
$this->dispatcher->dispatch(KernelEvents::EXCEPTION, $event);
|
||||
}
|
||||
|
||||
// let's clean up the output buffers that were created by the sub-request
|
||||
|
@ -25,7 +25,6 @@ use Symfony\Component\HttpFoundation\Request;
|
||||
use Symfony\Component\HttpFoundation\RequestStack;
|
||||
use Symfony\Component\HttpFoundation\Response;
|
||||
use Symfony\Component\EventDispatcher\EventDispatcherInterface;
|
||||
use Symfony\Component\Debug\Exception\HandledErrorException;
|
||||
use Symfony\Component\Debug\Exception\FatalErrorException;
|
||||
|
||||
/**
|
||||
@ -72,9 +71,6 @@ class HttpKernel implements HttpKernelInterface, TerminableInterface
|
||||
|
||||
throw $e;
|
||||
}
|
||||
if ($e instanceof HandledErrorException) {
|
||||
$e->cleanOutput();
|
||||
}
|
||||
|
||||
return $this->handleException($e, $request, $type);
|
||||
}
|
||||
@ -102,7 +98,6 @@ class HttpKernel implements HttpKernelInterface, TerminableInterface
|
||||
$response->sendContent();
|
||||
|
||||
$this->terminate($request, $response);
|
||||
$exception->cleanOutput();
|
||||
}
|
||||
|
||||
/**
|
||||
|
Reference in New Issue
Block a user