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<?php
namespace Illuminate\Contracts\Support;
interface MessageBag
{
/**
* Get the keys present in the message bag.
*
* @return array
*/
public function keys();
/**
* Add a message to the bag.
*
* @param string $key
* @param string $message
* @return $this
*/
public function add($key, $message);
/**
* Merge a new array of messages into the bag.
*
* @param \Illuminate\Contracts\Support\MessageProvider|array $messages
* @return $this
*/
public function merge($messages);
/**
* Determine if messages exist for a given key.
*
* @param string|array $key
* @return bool
*/
public function has($key);
/**
* Get the first message from the bag for a given key.
*
* @param string $key
* @param string $format
* @return string
*/
public function first($key = null, $format = null);
/**
* Get all of the messages from the bag for a given key.
*
* @param string $key
* @param string $format
* @return array
*/
public function get($key, $format = null);
/**
* Get all of the messages for every key in the bag.
*
* @param string $format
* @return array
*/
public function all($format = null);
/**
* Get the default message format.
*
* @return string
*/
public function getFormat();
/**
* Set the default message format.
*
* @param string $format
* @return $this
*/
public function setFormat($format = ':message');
/**
* Determine if the message bag has any messages.
*
* @return bool
*/
public function isEmpty();
/**
* Get the number of messages in the container.
*
* @return int
*/
public function count();
/**
* Get the instance as an array.
*
* @return array
*/
public function toArray();
}
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