(PHP 4 >= 4.3.0, PHP 5)
stream_get_meta_data — Retrieves header/meta data from streams/file pointers
$stream
)
Returns information about an existing stream.
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.
Nota: You shouldn't use this value in a script.
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 Supported Protocols and Wrappers for more information about wrappers.
wrapper_data (mixed) - wrapper specific data attached to this stream. See Supported Protocols and 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.
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.
| Versione | Descrizione |
|---|---|
| 5.0.0 | The following entries were added in the returned array: mode, seekable, and uri. |
| 4.3.0 | The following entries were added in the returned array: stream_type, wrapper_type, wrapper_data, and filters. |
| 4.3.0 | socket_get_status() is an alias for this function. Prior to PHP 4.3.0, it was used to retrieve the first four items, for socket based streams only. |
Example #1 stream_get_meta_data() example
<?php
$url = 'http://www.example.com/';
if (!$fp = fopen($url, 'r')) {
trigger_error("Unable to open URL ($url)", E_USER_ERROR);
}
$meta = stream_get_meta_data($fp);
print_r($meta);
fclose($fp);
?>
Il precedente esempio visualizzerà qualcosa simile a:
Array
(
[wrapper_data] => Array
(
[0] => HTTP/1.1 200 OK
[1] => Server: Apache/2.2.3 (Red Hat)
[2] => Last-Modified: Tue, 15 Nov 2005 13:24:10 GMT
[3] => ETag: "b300b4-1b6-4059a80bfd280"
[4] => Accept-Ranges: bytes
[5] => Content-Type: text/html; charset=UTF-8
[6] => Set-Cookie: FOO=BAR; expires=Fri, 21-Dec-2012 12:00:00 GMT; path=/; domain=.example.com
[6] => Connection: close
[7] => Date: Fri, 16 Oct 2009 12:00:00 GMT
[8] => Age: 1164
[9] => Content-Length: 438
)
[wrapper_type] => http
[stream_type] => tcp_socket/ssl
[mode] => r
[unread_bytes] => 438
[seekable] =>
[uri] => http://www.example.com/
[timed_out] =>
[blocked] => 1
[eof] =>
)
Nota:
This function does NOT work on sockets created by the Socket extension.