<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >socket_set_option</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK REL="HOME" TITLE="PHP 手册" HREF="index.html"><LINK REL="UP" TITLE="Socket Functions" HREF="ref.sockets.html"><LINK REL="PREVIOUS" TITLE="socket_set_nonblock" HREF="function.socket-set-nonblock.html"><LINK REL="NEXT" TITLE="socket_shutdown" HREF="function.socket-shutdown.html"><META HTTP-EQUIV="Content-type" CONTENT="text/html; charset=UTF-8"></HEAD ><BODY CLASS="refentry" BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#0000FF" VLINK="#840084" ALINK="#0000FF" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="3" ALIGN="center" >PHP 手册</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="function.socket-set-nonblock.html" ACCESSKEY="P" >上一页</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="function.socket-shutdown.html" ACCESSKEY="N" >下一页</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="function.socket-set-option" ></A >socket_set_option</H1 ><DIV CLASS="refnamediv" ><A NAME="AEN213776" ></A ><P > (PHP 4 >= 4.3.0, PHP 5)</P >socket_set_option -- Sets socket options for the socket</DIV ><DIV CLASS="refsect1" ><A NAME="AEN213779" ></A ><H2 >Description</H2 >bool <B CLASS="methodname" >socket_set_option</B > ( resource socket, int level, int optname, mixed optval )<BR ></BR ><P > The <B CLASS="function" >socket_set_option()</B > function sets the option specified by the <CODE CLASS="parameter" >optname</CODE > parameter, at the protocol level specified by the <CODE CLASS="parameter" >level</CODE > parameter, to the value pointed to by the <CODE CLASS="parameter" >optval</CODE > parameter for the socket specified by the <CODE CLASS="parameter" >socket</CODE > parameter. <B CLASS="function" >socket_set_option()</B > will return <TT CLASS="constant" ><B >FALSE</B ></TT > on failure. </P ><P > The <CODE CLASS="parameter" >level</CODE > parameter specifies the protocol level at which the option resides. For example, to retrieve options at the socket level, a <CODE CLASS="parameter" >level</CODE > parameter of SOL_SOCKET would be used. Other levels, such as TCP, can be used by specifying the protocol number of that level. Protocol numbers can be found by using the <A HREF="function.getprotobyname.html" ><B CLASS="function" >getprotobyname()</B ></A > function. </P ><P > The available socket options are the same as those for the <A HREF="function.socket-get-option.html" ><B CLASS="function" >socket_get_option()</B ></A > function. </P ><DIV CLASS="note" ><BLOCKQUOTE CLASS="note" ><P ><B >注意: </B > This function used to be called <B CLASS="function" >socket_setopt()</B > prior to PHP 4.3.0. </P ></BLOCKQUOTE ></DIV ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="function.socket-set-nonblock.html" ACCESSKEY="P" >上一页</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >起始页</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="function.socket-shutdown.html" ACCESSKEY="N" >下一页</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >socket_set_nonblock</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="ref.sockets.html" ACCESSKEY="U" >上一级</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >socket_shutdown</TD ></TR ></TABLE ></DIV ></BODY ></HTML >