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stream_get_meta_data

Retrieves header/meta data from streams/file pointers (PHP 4 >= 4.3.0, PHP 5)
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 PHP's own internal buffer.

    Note:

    You shouldn't use this value in a script.

The following items were added in PHP 4.3.0:

  • 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 Appendix O, List of Supported Protocols/Wrappers for more information about wrappers.

  • wrapper_data (mixed) - wrapper specific data attached to this stream. See Appendix O, List of Supported Protocols/Wrappers 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. Documentation on filters can be found in the Filters appendix.

Note:

This function was introduced in PHP 4.3.0, but prior to this version, socket_get_status() could be used to retrieve the first four items, for socket based streams only.

In PHP 4.3.0 and later, socket_get_status() is an alias for this function.

Note:

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

The following items were added in PHP 5.0.0:

  • mode (string) - the type of access required for this stream (see Table 1 of the fopen() reference)

  • seekable (bool) - whether the current stream can be seeked.

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