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><H1
><A
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>stream_socket_server</H1
><DIV
CLASS="refnamediv"
><A
NAME="AEN224046"
></A
><P
>    (PHP 5)</P
>stream_socket_server&nbsp;--&nbsp;
     Create an Internet or Unix domain server socket
    </DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN224049"
></A
><H2
>Description</H2
>resource <B
CLASS="methodname"
>stream_socket_server</B
> ( string local_socket [, int &#38;errno [, string &#38;errstr [, int flags [, resource context]]]] )<BR
></BR
><P
>&#13;     Creates a stream or datagram socket on the specified 
     <CODE
CLASS="parameter"
>local_socket</CODE
>.  The type of socket created
     is determined by the transport specified using standard URL formatting:
     <TT
CLASS="literal"
>transport://target</TT
>.  For Internet Domain sockets
     (AF_INET) such as TCP and UDP, the <TT
CLASS="literal"
>target</TT
> portion
     of the <CODE
CLASS="parameter"
>remote_socket</CODE
> parameter should consist of
     a hostname or IP address followed by a colon and a port number.  For Unix
     domain sockets, the <CODE
CLASS="parameter"
>target</CODE
> portion should point
     to the socket file on the filesystem.

     <CODE
CLASS="parameter"
>flags</CODE
> is a bitmask field which may be set to any
     combination of socket creation flags.  The default value of flags is
     <TT
CLASS="constant"
><B
>STREAM_SERVER_BIND</B
></TT
> | <TT
CLASS="constant"
><B
>STREAM_SERVER_LISTEN</B
></TT
>.
    </P
><DIV
CLASS="note"
><BLOCKQUOTE
CLASS="note"
><P
><B
>注意: </B
>
      For UDP sockets, you must use <TT
CLASS="constant"
><B
>STREAM_SERVER_BIND</B
></TT
> as
      the <CODE
CLASS="parameter"
>flags</CODE
> parameter.
     </P
></BLOCKQUOTE
></DIV
><P
>&#13;     This function only creates a socket, to begin accepting connections
     use <A
HREF="function.stream-socket-accept.html"
><B
CLASS="function"
>stream_socket_accept()</B
></A
>.
    </P
><P
>&#13;     If the call fails, it will return <TT
CLASS="constant"
><B
>FALSE</B
></TT
> and if the optional
     <CODE
CLASS="parameter"
>errno</CODE
> and <CODE
CLASS="parameter"
>errstr</CODE
>
     arguments are present they will be set to indicate the actual
     system level error that occurred in the system-level
     <TT
CLASS="literal"
>socket()</TT
>, <TT
CLASS="literal"
>bind()</TT
>, and
     <TT
CLASS="literal"
>listen()</TT
> calls. If the value returned in
     <CODE
CLASS="parameter"
>errno</CODE
> is <TT
CLASS="literal"
>0</TT
> and the
     function returned <TT
CLASS="constant"
><B
>FALSE</B
></TT
>, it is an indication that the error
     occurred before the <TT
CLASS="literal"
>bind()</TT
> call. This is
     most likely due to a problem initializing the socket. Note that
     the <CODE
CLASS="parameter"
>errno</CODE
> and
     <CODE
CLASS="parameter"
>errstr</CODE
> arguments will always be passed by
     reference.
    </P
><P
>&#13;     Depending on the environment, Unix domain sockets may not be available.  
     A list of available transports can be retrieved using 
     <A
HREF="function.stream-get-transports.html"
><B
CLASS="function"
>stream_get_transports()</B
></A
>. See
     <A
HREF="transports.html"
>附录 P</A
> for a list of bulitin transports.
    </P
><P
>&#13;     <TABLE
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
CLASS="EXAMPLE"
><TR
><TD
><DIV
CLASS="example"
><A
NAME="AEN224101"
></A
><P
><B
>例 1. Using TCP server sockets</B
></P
><TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
CELLPADDING="5"
><TR
><TD
><code><font color="#000000">
<font color="#0000BB">&lt;?php<br />$socket </font><font color="#007700">= </font><font color="#0000BB">stream_socket_server</font><font color="#007700">(</font><font color="#DD0000">"tcp://0.0.0.0:8000"</font><font color="#007700">, </font><font color="#0000BB">$errno</font><font color="#007700">, </font><font color="#0000BB">$errstr</font><font color="#007700">);<br />if (!</font><font color="#0000BB">$socket</font><font color="#007700">) {<br />&nbsp;&nbsp;echo </font><font color="#DD0000">"$errstr ($errno)&lt;br /&gt;</font><font color="#007700">\n</font><font color="#DD0000">"</font><font color="#007700">;<br />} else {<br />&nbsp;&nbsp;while (</font><font color="#0000BB">$conn </font><font color="#007700">= </font><font color="#0000BB">stream_socket_accept</font><font color="#007700">(</font><font color="#0000BB">$socket</font><font color="#007700">)) {<br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">fwrite</font><font color="#007700">(</font><font color="#0000BB">$conn</font><font color="#007700">, </font><font color="#DD0000">'The local time is ' </font><font color="#007700">. </font><font color="#0000BB">date</font><font color="#007700">(</font><font color="#DD0000">'n/j/Y g:i a'</font><font color="#007700">) . </font><font color="#DD0000">"\n"</font><font color="#007700">);<br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">fclose</font><font color="#007700">(</font><font color="#0000BB">$conn</font><font color="#007700">);<br />&nbsp;&nbsp;}<br />&nbsp;&nbsp;</font><font color="#0000BB">fclose</font><font color="#007700">(</font><font color="#0000BB">$socket</font><font color="#007700">);<br />}<br /></font><font color="#0000BB">?&gt;</font>
</font>
</code></TD
></TR
></TABLE
></DIV
></TD
></TR
></TABLE
>
    </P
><P
>&#13;     The example below shows how to act as a time server which can respond
     to time queries as shown in an example on <A
HREF="function.stream-socket-client.html"
><B
CLASS="function"
>stream_socket_client()</B
></A
>.
     <DIV
CLASS="note"
><BLOCKQUOTE
CLASS="note"
><P
><B
>注意: </B
>
       Most systems require root access to create a server socket on a port
       below 1024.
      </P
></BLOCKQUOTE
></DIV
>
     <TABLE
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CLASS="EXAMPLE"
><TR
><TD
><DIV
CLASS="example"
><A
NAME="AEN224108"
></A
><P
><B
>例 2. Using UDP server sockets</B
></P
><TABLE
BORDER="0"
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CELLPADDING="5"
><TR
><TD
><code><font color="#000000">
<font color="#0000BB">&lt;?php<br />$socket </font><font color="#007700">= </font><font color="#0000BB">stream_socket_server</font><font color="#007700">(</font><font color="#DD0000">"udp://127.0.0.1:1113"</font><font color="#007700">, </font><font color="#0000BB">$errno</font><font color="#007700">, </font><font color="#0000BB">$errstr</font><font color="#007700">, </font><font color="#0000BB">STREAM_SERVER_BIND</font><font color="#007700">);<br />if (!</font><font color="#0000BB">$socket</font><font color="#007700">) {<br />&nbsp;&nbsp;&nbsp;&nbsp;die(</font><font color="#DD0000">"$errstr ($errno)"</font><font color="#007700">);<br />}<br /><br />do {<br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">$pkt </font><font color="#007700">= </font><font color="#0000BB">stream_socket_recvfrom</font><font color="#007700">(</font><font color="#0000BB">$socket</font><font color="#007700">, </font><font color="#0000BB">1</font><font color="#007700">, </font><font color="#0000BB">0</font><font color="#007700">, </font><font color="#0000BB">$peer</font><font color="#007700">);<br />&nbsp;&nbsp;&nbsp;&nbsp;echo </font><font color="#DD0000">"$peer</font><font color="#007700">\n</font><font color="#DD0000">"</font><font color="#007700">;<br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">stream_socket_sendto</font><font color="#007700">(</font><font color="#0000BB">$socket</font><font color="#007700">, </font><font color="#0000BB">date</font><font color="#007700">(</font><font color="#DD0000">"D M j H:i:s Y\r\n"</font><font color="#007700">), </font><font color="#0000BB">0</font><font color="#007700">, </font><font color="#0000BB">$peer</font><font color="#007700">);<br />} while (</font><font color="#0000BB">$pkt </font><font color="#007700">!== </font><font color="#0000BB">false</font><font color="#007700">);<br /><br /></font><font color="#0000BB">?&gt;</font>
</font>
</code></TD
></TR
></TABLE
></DIV
></TD
></TR
></TABLE
>
    </P
><DIV
CLASS="note"
><BLOCKQUOTE
CLASS="note"
><P
><B
>注意: </B
>当指定数字的
IPv6 地址（例如 fe80::1）时必须将 IP 地址放在方括号内。例如
<TT
CLASS="literal"
>tcp://[fe80::1]:80</TT
>。</P
></BLOCKQUOTE
></DIV
><P
>&#13;     See also <A
HREF="function.stream-socket-client.html"
><B
CLASS="function"
>stream_socket_client()</B
></A
>, 
     <A
HREF="function.stream-set-blocking.html"
><B
CLASS="function"
>stream_set_blocking()</B
></A
>,
     <A
HREF="function.stream-set-timeout.html"
><B
CLASS="function"
>stream_set_timeout()</B
></A
>, 
     <A
HREF="function.fgets.html"
><B
CLASS="function"
>fgets()</B
></A
>,
     <A
HREF="function.fgetss.html"
><B
CLASS="function"
>fgetss()</B
></A
>, <A
HREF="function.fwrite.html"
><B
CLASS="function"
>fwrite()</B
></A
>,
     <A
HREF="function.fclose.html"
><B
CLASS="function"
>fclose()</B
></A
>, <A
HREF="function.feof.html"
><B
CLASS="function"
>feof()</B
></A
>, and
     the <A
HREF="ref.curl.html"
>Curl extension</A
>.
    </P
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