scratch – Rev 87
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<?php
namespace GuzzleHttp\Stream;
/**
* Represents a stream that contains metadata
*/
interface MetadataStreamInterface extends StreamInterface
{
/**
* Get stream metadata as an associative array or retrieve a specific key.
*
* The keys returned are identical to the keys returned from PHP's
* stream_get_meta_data() function.
*
* @param string $key Specific metadata to retrieve.
*
* @return array|mixed|null Returns an associative array if no key is
* no key is provided. Returns a specific key
* value if a key is provided and the value is
* found, or null if the key is not found.
* @see http://php.net/manual/en/function.stream-get-meta-data.php
*/
public function getMetadata($key = null);
}