Online PHP editor | rfc for 1Pvtj

<?php namespace{ Symfony\Component\Debug\ExceptionHandler::register(); throw new Exception('foo msg'); } /* * 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\HttpFoundation\Response; use Symfony\Component\Debug\Exception\FlattenException; use Symfony\Component\Debug\Exception\OutOfMemoryException; if (!defined('ENT_SUBSTITUTE')) { define('ENT_SUBSTITUTE', 8); } /** * ExceptionHandler converts an exception to a Response object. * * It is mostly useful in debug mode to replace the default PHP/XDebug * output with something prettier and more useful. * * As this class is mainly used during Kernel boot, where nothing is yet * available, the Response content is always HTML. * * @author Fabien Potencier <fabien@symfony.com> */ class ExceptionHandler { private $debug; private $charset; private $handler; private $caughtOutput = 0; public function __construct($debug = true, $charset = 'UTF-8') { $this->debug = $debug; $this->charset = $charset; } /** * Registers the exception handler. * * @param bool $debug * * @return ExceptionHandler The registered exception handler */ public static function register($debug = true) { $handler = new static($debug); set_exception_handler(array($handler, 'handle')); return $handler; } /** * Sets a user exception handler. * * @param callable $handler An handler that will be called on Exception * * @return callable|null The previous exception handler if any */ public function setHandler($handler) { if (isset($handler) && !is_callable($handler)) { throw new \LogicException('The exception handler must be a valid PHP callable.'); } $old = $this->handler; $this->handler = $handler; return $old; } /** * {@inheritdoc} * * Sends a response for the given Exception. * * If you have the Symfony HttpFoundation component installed, * this method will use it to create and send the response. If not, * it will fallback to plain PHP functions. * * @see sendPhpResponse * @see createResponse */ public function handle(\Exception $exception) { if ($exception instanceof OutOfMemoryException) { $this->sendPhpResponse($exception); return; } // To be as fail-safe as possible, the exception is first handled // by our simple exception handler, then by the user exception handler. // The latter takes precedence and any output from the former is cancelled, // if and only if nothing bad happens in this handling path. $caughtOutput = 0; $this->caughtOutput = false; ob_start(array($this, 'catchOutput')); try { if (class_exists('Symfony\Component\HttpFoundation\Response')) { $response = $this->createResponse($exception); $response->sendHeaders(); $response->sendContent(); } else { $this->sendPhpResponse($exception); } } catch (\Exception $e) { // Ignore this $e exception, we have to deal with $exception } if (false === $this->caughtOutput) { ob_end_clean(); } if (isset($this->caughtOutput[0])) { ob_start(array($this, 'cleanOutput')); echo $this->caughtOutput; $caughtOutput = ob_get_length(); } $this->caughtOutput = 0; if (!empty($this->handler)) { try { call_user_func($this->handler, $exception); if ($caughtOutput) { $this->caughtOutput = $caughtOutput; } } catch (\Exception $e) { if (!$caughtOutput) { // All handlers failed. Let PHP handle that now. throw $exception; } } } } /** * Sends the error associated with the given Exception as a plain PHP response. * * This method uses plain PHP functions like header() and echo to output * the response. * * @param \Exception|FlattenException $exception An \Exception instance */ public function sendPhpResponse($exception) { echo $exception->getMessage(); return; if (!$exception instanceof FlattenException) { $exception = FlattenException::create($exception); } if (!headers_sent()) { header(sprintf('HTTP/1.0 %s', $exception->getStatusCode())); foreach ($exception->getHeaders() as $name => $value) { header($name.': '.$value, false); } } echo $this->decorate($this->getContent($exception), $this->getStylesheet($exception)); } /** * Creates the error Response associated with the given Exception. * * @param \Exception|FlattenException $exception An \Exception instance * * @return Response A Response instance */ public function createResponse($exception) { if (!$exception instanceof FlattenException) { $exception = FlattenException::create($exception); } return new Response($this->decorate($this->getContent($exception), $this->getStylesheet($exception)), $exception->getStatusCode(), $exception->getHeaders()); } /** * Gets the HTML content associated with the given exception. * * @param FlattenException $exception A FlattenException instance * * @return string The content as a string */ public function getContent(FlattenException $exception) { switch ($exception->getStatusCode()) { case 404: $title = 'Sorry, the page you are looking for could not be found.'; break; default: $title = 'Whoops, looks like something went wrong.'; } $content = ''; if ($this->debug) { try { $count = count($exception->getAllPrevious()); $total = $count + 1; foreach ($exception->toArray() as $position => $e) { $ind = $count - $position + 1; $class = $this->abbrClass($e['class']); $message = nl2br($e['message']); $content .= sprintf(<<<EOF <div class="block_exception clear_fix"> <h2><span>%d/%d</span> %s: %s</h2> </div> <div class="block"> <ol class="traces list_exception"> EOF , $ind, $total, $class, $message); foreach ($e['trace'] as $trace) { $content .= ' <li>'; if ($trace['function']) { $content .= sprintf('at %s%s%s(%s)', $this->abbrClass($trace['class']), $trace['type'], $trace['function'], $this->formatArgs($trace['args'])); } if (isset($trace['file']) && isset($trace['line'])) { if ($linkFormat = ini_get('xdebug.file_link_format')) { $link = str_replace(array('%f', '%l'), array($trace['file'], $trace['line']), $linkFormat); $content .= sprintf(' in <a href="%s" title="Go to source">%s line %s</a>', $link, $trace['file'], $trace['line']); } else { $content .= sprintf(' in %s line %s', $trace['file'], $trace['line']); } } $content .= "</li>\n"; } $content .= " </ol>\n</div>\n"; } } catch (\Exception $e) { // something nasty happened and we cannot throw an exception anymore if ($this->debug) { $title = sprintf('Exception thrown when handling an exception (%s: %s)', get_class($exception), $exception->getMessage()); } else { $title = 'Whoops, looks like something went wrong.'; } } } return <<<EOF <div id="sf-resetcontent" class="sf-reset"> <h1>$title</h1> $content </div> EOF; } /** * Gets the stylesheet associated with the given exception. * * @param FlattenException $exception A FlattenException instance * * @return string The stylesheet as a string */ public function getStylesheet(FlattenException $exception) { return <<<EOF .sf-reset { font: 11px Verdana, Arial, sans-serif; color: #333 } .sf-reset .clear { clear:both; height:0; font-size:0; line-height:0; } .sf-reset .clear_fix:after { display:block; height:0; clear:both; visibility:hidden; } .sf-reset .clear_fix { display:inline-block; } .sf-reset * html .clear_fix { height:1%; } .sf-reset .clear_fix { display:block; } .sf-reset, .sf-reset .block { margin: auto } .sf-reset abbr { border-bottom: 1px dotted #000; cursor: help; } .sf-reset p { font-size:14px; line-height:20px; color:#868686; padding-bottom:20px } .sf-reset strong { font-weight:bold; } .sf-reset a { color:#6c6159; } .sf-reset a img { border:none; } .sf-reset a:hover { text-decoration:underline; } .sf-reset em { font-style:italic; } .sf-reset h1, .sf-reset h2 { font: 20px Georgia, "Times New Roman", Times, serif } .sf-reset h2 span { background-color: #fff; color: #333; padding: 6px; float: left; margin-right: 10px; } .sf-reset .traces li { font-size:12px; padding: 2px 4px; list-style-type:decimal; margin-left:20px; } .sf-reset .block { background-color:#FFFFFF; padding:10px 28px; margin-bottom:20px; -webkit-border-bottom-right-radius: 16px; -webkit-border-bottom-left-radius: 16px; -moz-border-radius-bottomright: 16px; -moz-border-radius-bottomleft: 16px; border-bottom-right-radius: 16px; border-bottom-left-radius: 16px; border-bottom:1px solid #ccc; border-right:1px solid #ccc; border-left:1px solid #ccc; } .sf-reset .block_exception { background-color:#ddd; color: #333; padding:20px; -webkit-border-top-left-radius: 16px; -webkit-border-top-right-radius: 16px; -moz-border-radius-topleft: 16px; -moz-border-radius-topright: 16px; border-top-left-radius: 16px; border-top-right-radius: 16px; border-top:1px solid #ccc; border-right:1px solid #ccc; border-left:1px solid #ccc; overflow: hidden; word-wrap: break-word; } .sf-reset li a { background:none; color:#868686; text-decoration:none; } .sf-reset li a:hover { background:none; color:#313131; text-decoration:underline; } .sf-reset ol { padding: 10px 0; } .sf-reset h1 { background-color:#FFFFFF; padding: 15px 28px; margin-bottom: 20px; -webkit-border-radius: 10px; -moz-border-radius: 10px; border-radius: 10px; border: 1px solid #ccc; } EOF; } private function decorate($content, $css) { return <<<EOF <!DOCTYPE html> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/> <meta name="robots" content="noindex,nofollow" /> <style> /* Copyright (c) 2010, Yahoo! Inc. All rights reserved. Code licensed under the BSD License: http://developer.yahoo.com/yui/license.html */ html{color:#000;background:#FFF;}body,div,dl,dt,dd,ul,ol,li,h1,h2,h3,h4,h5,h6,pre,code,form,fieldset,legend,input,textarea,p,blockquote,th,td{margin:0;padding:0;}table{border-collapse:collapse;border-spacing:0;}fieldset,img{border:0;}address,caption,cite,code,dfn,em,strong,th,var{font-style:normal;font-weight:normal;}li{list-style:none;}caption,th{text-align:left;}h1,h2,h3,h4,h5,h6{font-size:100%;font-weight:normal;}q:before,q:after{content:'';}abbr,acronym{border:0;font-variant:normal;}sup{vertical-align:text-top;}sub{vertical-align:text-bottom;}input,textarea,select{font-family:inherit;font-size:inherit;font-weight:inherit;}input,textarea,select{*font-size:100%;}legend{color:#000;} html { background: #eee; padding: 10px } img { border: 0; } #sf-resetcontent { width:970px; margin:0 auto; } $css </style> </head> <body> $content </body> </html> EOF; } private function abbrClass($class) { $parts = explode('\\', $class); return sprintf("<abbr title=\"%s\">%s</abbr>", $class, array_pop($parts)); } /** * Formats an array as a string. * * @param array $args The argument array * * @return string */ private function formatArgs(array $args) { $result = array(); foreach ($args as $key => $item) { if ('object' === $item[0]) { $formattedValue = sprintf("<em>object</em>(%s)", $this->abbrClass($item[1])); } elseif ('array' === $item[0]) { $formattedValue = sprintf("<em>array</em>(%s)", is_array($item[1]) ? $this->formatArgs($item[1]) : $item[1]); } elseif ('string' === $item[0]) { $formattedValue = sprintf("'%s'", htmlspecialchars($item[1], ENT_QUOTES | ENT_SUBSTITUTE, $this->charset)); } elseif ('null' === $item[0]) { $formattedValue = '<em>null</em>'; } elseif ('boolean' === $item[0]) { $formattedValue = '<em>'.strtolower(var_export($item[1], true)).'</em>'; } elseif ('resource' === $item[0]) { $formattedValue = '<em>resource</em>'; } else { $formattedValue = str_replace("\n", '', var_export(htmlspecialchars((string) $item[1], ENT_QUOTES | ENT_SUBSTITUTE, $this->charset), true)); } $result[] = is_int($key) ? $formattedValue : sprintf("'%s' => %s", $key, $formattedValue); } return implode(', ', $result); } /** * @internal */ public function catchOutput($buffer) { $this->caughtOutput = $buffer; return ''; } /** * @internal */ public function cleanOutput($buffer) { if ($this->caughtOutput) { // use substr_replace() instead of substr() for mbstring overloading resistance $cleanBuffer = substr_replace($buffer, '', 0, $this->caughtOutput); if (isset($cleanBuffer[0])) { $buffer = $cleanBuffer; } } return $buffer; } } }

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