added exception handler example

VimExceptionHandler.php

@@ -0,0 +1,77 @@
+<?php
+
+use Symfony\Component\HttpKernel\Event\GetResponseForExceptionEvent;
+
+/**
+ * a vim exception handler
+ *
+ * Commands a remote vim instance to display the stacktrace in a quickfix list
+ *
+ * @author     Florian Klein <florian.klein@free.fr>
+ */
+class VimExceptionHandler
+{
+    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',
+    );
+
+    private $level;
+
+    static public function register($level = null)
+    {
+        $handler = new static();
+        $handler->setLevel($level);
+        set_error_handler(array($handler, 'handleError'));
+        set_exception_handler(array($handler, 'handleException'));
+
+        return $handler;
+    }
+
+    public function onKernelException(GetResponseForExceptionEvent $event)
+    {
+        $exception = $event->getException();
+        $this->handleException($exception);
+    }
+
+    public function setLevel($level)
+    {
+        $this->level = null === $level ? error_reporting() : $level;
+    }
+
+    /**
+     * @throws \ErrorException When error_reporting returns error
+     */
+    public function handleError($level, $message, $file, $line, $context)
+    {
+        if (0 === $this->level) {
+            return false;
+        }
+
+        if (error_reporting() & $level && $this->level & $level) {
+            throw new \ErrorException(sprintf('%s: %s in %s line %d', isset($this->levels[$level]) ? $this->levels[$level] : $level, $message, $file, $line));
+        }
+
+        return false;
+    }
+
+    private function handleException(Exception $exception)
+    {
+        $stack = '';
+        foreach ($exception->getTrace() as $row) {
+            if (isset($row['file'])) {
+                $stack .= sprintf('%s | %s | %s', $row['file'], $row['line'], $row['function'])."\n";
+            }
+        }
+        file_put_contents('/tmp/stack.php', $stack);
+
+        $cmd = sprintf('vim --servername %s --remote-send ":call PhpStackTrace()<CR>"', 'florian');
+        shell_exec($cmd);
+    }
+}
+