--- /dev/null
+<?php
+
+/*
+ * This file is part of the Monolog package.
+ *
+ * (c) Jordi Boggiano <j.boggiano@seld.be>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Monolog\Formatter;
+
+/**
+ * Interface for formatters
+ *
+ * @author Jordi Boggiano <j.boggiano@seld.be>
+ */
+interface FormatterInterface
+{
+ /**
+ * Formats a log record.
+ *
+ * @param array $record A record to format
+ * @return mixed The formatted record
+ */
+ public function format(array $record);
+
+ /**
+ * Formats a set of log records.
+ *
+ * @param array $records A set of records to format
+ * @return mixed The formatted set of records
+ */
+ public function formatBatch(array $records);
+}