PHP stream_get_meta_data return value _php base

The test code is as follows:

Copy Code code as follows:

<?php
$FP =fopen ("http://www.sina.com.cn", ' R ');
$stream _meta = Stream_get_meta_data ($FP);
Print_r ($stream _meta);
?>

in my native output is as follows:


Array


(


[Wrapper_data] =&gt; Array


         (


[0] =&gt; http/1.0 OK


[1] =&gt; date:tue, Dec 10:08:11 GMT


[2] =&gt; Server:apache


[3] =&gt; last-modified:tue, Dec 10:07:12 GMT


[4] =&gt; accept-ranges:bytes


[5] =&gt; X-powered-by:mod_xlayout/rc2


[6] =&gt; cache-control:max-age=60


[7] =&gt; expires:tue, Dec 10:09:11 GMT


[8] =&gt; vary:accept-encoding


[9] =&gt; x-ua-compatible:ie=emulateie7


[Ten] =&gt; content-type:text/html


[one] =&gt; age:26


[[] =&gt; content-length:675274


[] =&gt; x-cache:hit from xd33-98.hp08040037.sina.com.cn


[] =&gt; connection:close


         )





[Wrapper_type] =&gt; http


[Stream_type] =&gt; Tcp_socket/ssl


[mode] =&gt; R


[unread_bytes] =&gt; 3759


[Seekable] =&gt;


[URI] =&gt; http://www.sina.com.cn


[timed_out] =&gt;


[blocked] =&gt; 1


[EOF] =&gt;


)





Description





array stream_get_meta_data (int $fp)


returns information about the existing stream. can be any stream established through fopen (), Fsockopen () and Pfsockopen (). The returned array contains the following items:





Timed_out (BOOL)-True if waiting for data Shireu timed out in the last Call to Fread () or fgets ().





blocked (bool)-true if the stream is in blocked IO mode. See Stream_set_blocking ().





EOF (BOOL)-true if the stream reaches the end of the file. Note that you can also be TRUE for the socket stream even when unread_bytes is a value other than 0. To determine if more data is readable, use feof () instead of reading the value of this item.





unread_bytes (int)-The number of bytes currently in PHP's own internal buffer.





Note: Do not use this value in scripts.





the following items are PHP 4.3 new:





Stream_type (String)-a callout that describes the underlying implementation of a stream.





Wrapper_type (String)-a callout that encapsulates the implementation of a layered protocol that describes a stream. For more information on encapsulating protocols, see supported protocols and encapsulation protocols.





wrapper_data (mixed)-the package protocol data that is attached to the current stream. For more information on encapsulation protocols and their data, see supported protocols and encapsulation protocols.





Filters (Array)-contains arrays of any filter names that are superimposed on the current stream. The filter's documentation is shown in the appendix to the list of available filters.





Note:





This function is introduced in PHP 4.3, before this release, you can use Socket_get_status () to obtain the first four items and only for the socket based flow.





in PHP 4.3 and later, Socket_get_status () is the alias for this function.








Note: This function does not work on streams created through the Socket extension library.





the following items for PHP 5.0 add:





mode (String)-the type of access required for the current stream (see table 1 in fopen ()).





seekable (BOOL)-can be positioned in the current stream.





URI (String)-the URI or file name associated with the current stream.