dateTimeFormat = $dateTimeFormat; } } /** * Formats data to be written by the writer. * * @param array $event event data * @return array */ public function format($event) { foreach ($event as $key => $value) { // Keep extra as an array if ('extra' === $key && is_array($value)) { $event[$key] = self::format($value); } else { $event[$key] = $this->normalize($value); } } return $event; } /** * Normalize all non-scalar data types (except null) in a string value * * @param mixed $value * @return mixed */ protected function normalize($value) { if (is_scalar($value) || null === $value) { return $value; } // better readable JSON static $jsonFlags; if ($jsonFlags === null) { $jsonFlags = 0; $jsonFlags |= defined('JSON_UNESCAPED_SLASHES') ? JSON_UNESCAPED_SLASHES : 0; $jsonFlags |= defined('JSON_UNESCAPED_UNICODE') ? JSON_UNESCAPED_UNICODE : 0; } // Error suppression is used in several of these cases as a fix for each of // #5383 and #4616. Without it, #4616 fails whenever recursion occurs during // json_encode() operations; usage of a dedicated error handler callback // causes #5383 to fail when the Logger is being used as an error handler. // The only viable solution here is error suppression, ugly as it may be. if ($value instanceof DateTime) { $value = $value->format($this->getDateTimeFormat()); } elseif ($value instanceof Traversable) { $value = @json_encode(iterator_to_array($value), $jsonFlags); } elseif (is_array($value)) { $value = @json_encode($value, $jsonFlags); } elseif (is_object($value) && !method_exists($value, '__toString')) { $value = sprintf('object(%s) %s', get_class($value), @json_encode($value)); } elseif (is_resource($value)) { $value = sprintf('resource(%s)', get_resource_type($value)); } elseif (!is_object($value)) { $value = gettype($value); } return (string) $value; } /** * {@inheritDoc} */ public function getDateTimeFormat() { return $this->dateTimeFormat; } /** * {@inheritDoc} */ public function setDateTimeFormat($dateTimeFormat) { $this->dateTimeFormat = (string) $dateTimeFormat; return $this; } }