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# stream_get_meta_data

(PHP 4 >= 4.3.0, PHP 5)

stream_get_meta_data -- Retrieves header/meta data from streams/file pointers

## Description

array stream_get_meta_data ( resource stream)

Returns information about an existing stream. The stream can be any stream created by fopen(), fsockopen() and pfsockopen(). The result array contains the following items:

- timed_out (bool) - `TRUE` if the stream timed out while waiting for data on the last call to fread() or fgets().

- blocked (bool) - `TRUE` if the stream is in blocking IO mode. See stream_set_blocking().

- eof (bool) - `TRUE` if the stream has reached end-of-file. Note that for socket streams this member can be `TRUE` even when unread_bytes is non-zero. To determine if there is more data to be read, use feof() instead of reading this item.

- unread_bytes (int) - the number of bytes currently contained in the read buffer.

The following items were added in PHP 4.3:

- stream_type (string) - a label describing the underlying implementation of the stream.

- wrapper_type (string) - a label describing the protocol wrapper implementation layered over the stream. See 附錄 L for more information about wrappers.

- wrapper_data (mixed) - wrapper specific data attached to this stream. See 附錄 L for more information about wrappers and their wrapper data.

- filters (array) - and array containing the names of any filters that have been stacked onto this stream. Filters are currently undocumented.

> 備注: This function was introduced in PHP 4.3, but prior to this version, socket_get_status() could be used to retrieve the first four items, for socket based streams only.

> In PHP 4.3 and later, socket_get_status() is an alias for this function.

> 備注:This function does NOT work on sockets created by the Socket extension.

The following items were added in PHP 5.0:

- mode (string) - the mode (or permissions) of the URI associated with this stream.

- seakable (bool) - whether the current stream can be seeked in.

- uri (string) - the URI/filename associated with this stream.

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