<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >stream_socket_pair</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK REL="HOME" TITLE="Manual do PHP" HREF="index.html"><LINK REL="UP" TITLE="Stream Functions" HREF="ref.stream.html"><LINK REL="PREVIOUS" TITLE="stream_socket_get_name" HREF="function.stream-socket-get-name.html"><LINK REL="NEXT" TITLE="stream_socket_recvfrom" HREF="function.stream-socket-recvfrom.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" >Manual do PHP</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="function.stream-socket-get-name.html" ACCESSKEY="P" >Anterior</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="function.stream-socket-recvfrom.html" ACCESSKEY="N" >Próxima</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="function.stream-socket-pair" ></A >stream_socket_pair</H1 ><DIV CLASS="refnamediv" ><A NAME="AEN217757" ></A ><P > (PHP 5 >= 5.1.0RC1)</P >stream_socket_pair -- Creates a pair of connected, indistinguishable socket streams </DIV ><DIV CLASS="refsect1" ><A NAME="AEN217760" ></A ><H2 >Descrição</H2 >array <B CLASS="methodname" >stream_socket_pair</B > ( int domain, int type, int protocol )<BR ></BR ><P > <B CLASS="function" >stream_socket_pair()</B > creates a pair of connected, indistinguishable socket streams. This function is commonly used in IPC (Inter-Process Communication). </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN217776" ></A ><H2 >Parâmetros</H2 ><P > <P ></P ><DIV CLASS="variablelist" ><DL ><DT ><CODE CLASS="parameter" >domain</CODE ></DT ><DD ><P > The protocol family to be used: <TT CLASS="constant" ><B >STREAM_PF_INET</B ></TT >, <TT CLASS="constant" ><B >STREAM_PF_INET6</B ></TT > or <TT CLASS="constant" ><B >STREAM_PF_UNIX</B ></TT > </P ></DD ><DT ><CODE CLASS="parameter" >type</CODE ></DT ><DD ><P > The type of communication to be used: <TT CLASS="constant" ><B >STREAM_SOCK_DGRAM</B ></TT >, <TT CLASS="constant" ><B >STREAM_SOCK_RAW</B ></TT >, <TT CLASS="constant" ><B >STREAM_SOCK_RDM</B ></TT >, <TT CLASS="constant" ><B >STREAM_SOCK_SEQPACKET</B ></TT > or <TT CLASS="constant" ><B >STREAM_SOCK_STREAM</B ></TT > </P ></DD ><DT ><CODE CLASS="parameter" >protocol</CODE ></DT ><DD ><P > The protocol to be used: <TT CLASS="constant" ><B >STREAM_IPPROTO_ICMP</B ></TT >, <TT CLASS="constant" ><B >STREAM_IPPROTO_IP</B ></TT >, <TT CLASS="constant" ><B >STREAM_IPPROTO_RAW</B ></TT >, <TT CLASS="constant" ><B >STREAM_IPPROTO_TCP</B ></TT > or <TT CLASS="constant" ><B >STREAM_IPPROTO_UDP</B ></TT > </P ></DD ></DL ></DIV > </P ><DIV CLASS="note" ><BLOCKQUOTE CLASS="note" ><P ><B >Nota: </B > Please consult the <A HREF="ref.stream.html#stream.constants" >Streams constant list</A > for further details on each constant. </P ></BLOCKQUOTE ></DIV ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN217811" ></A ><H2 >Valores de retornado</H2 ><P > Returns an <A HREF="language.types.array.html" ><B CLASS="type" >array</B ></A > with the two socket resources on success, or <TT CLASS="constant" ><B >FALSE</B ></TT > on failure. </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN217816" ></A ><H2 >Exemplos</H2 ><P > <TABLE WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" CLASS="EXAMPLE" ><TR ><TD ><DIV CLASS="example" ><A NAME="AEN217819" ></A ><P ><B >Exemplo 1. A <B CLASS="function" >stream_socket_pair()</B > example</B ></P ><P > This example shows the basic usage of <B CLASS="function" >stream_socket_pair()</B > in Inter-Process Comunication. </P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" CELLPADDING="5" ><TR ><TD ><code><font color="#000000"> <font color="#0000BB"><?php<br /><br />$sockets </font><font color="#007700">= </font><font color="#0000BB">stream_socket_pair</font><font color="#007700">(</font><font color="#0000BB">STREAM_PF_UNIX</font><font color="#007700">, </font><font color="#0000BB">STREAM_SOCK_STREAM</font><font color="#007700">, </font><font color="#0000BB">STREAM_IPPROTO_IP</font><font color="#007700">);<br /></font><font color="#0000BB">$pid </font><font color="#007700">= </font><font color="#0000BB">pcntl_fork</font><font color="#007700">();<br /><br />if (</font><font color="#0000BB">$pid </font><font color="#007700">== -</font><font color="#0000BB">1</font><font color="#007700">) {<br /> die(</font><font color="#DD0000">'could not fork'</font><font color="#007700">);<br /><br />} else if (</font><font color="#0000BB">$pid</font><font color="#007700">) {<br /> </font><font color="#FF8000">/* parent */<br /> </font><font color="#0000BB">fclose</font><font color="#007700">(</font><font color="#0000BB">$sockets</font><font color="#007700">[</font><font color="#0000BB">0</font><font color="#007700">]);<br /><br /> </font><font color="#0000BB">fwrite</font><font color="#007700">(</font><font color="#0000BB">$sockets</font><font color="#007700">[</font><font color="#0000BB">1</font><font color="#007700">], </font><font color="#DD0000">"child PID: $pid</font><font color="#007700">\n</font><font color="#DD0000">"</font><font color="#007700">);<br /> echo </font><font color="#0000BB">fgets</font><font color="#007700">(</font><font color="#0000BB">$sockets</font><font color="#007700">[</font><font color="#0000BB">1</font><font color="#007700">]);<br /><br /> </font><font color="#0000BB">fclose</font><font color="#007700">(</font><font color="#0000BB">$sockets</font><font color="#007700">[</font><font color="#0000BB">1</font><font color="#007700">]);<br /><br />} else {<br /> </font><font color="#FF8000">/* child */<br /> </font><font color="#0000BB">fclose</font><font color="#007700">(</font><font color="#0000BB">$sockets</font><font color="#007700">[</font><font color="#0000BB">1</font><font color="#007700">]);<br /><br /> </font><font color="#0000BB">fwrite</font><font color="#007700">(</font><font color="#0000BB">$sockets</font><font color="#007700">[</font><font color="#0000BB">0</font><font color="#007700">], </font><font color="#DD0000">"message from child\n"</font><font color="#007700">);<br /> echo </font><font color="#0000BB">fgets</font><font color="#007700">(</font><font color="#0000BB">$sockets</font><font color="#007700">[</font><font color="#0000BB">0</font><font color="#007700">]);<br /><br /> </font><font color="#0000BB">fclose</font><font color="#007700">(</font><font color="#0000BB">$sockets</font><font color="#007700">[</font><font color="#0000BB">0</font><font color="#007700">]);<br />}<br /><br /></font><font color="#0000BB">?></font> </font> </code></TD ></TR ></TABLE ><P >O exemplo acima irá imprimir algo similar a:</P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" CELLPADDING="5" ><TR ><TD ><PRE CLASS="screen" >child PID: 1378 message from child</PRE ></TD ></TR ></TABLE ></DIV ></TD ></TR ></TABLE > </P ></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.stream-socket-get-name.html" ACCESSKEY="P" >Anterior</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >Principal</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="function.stream-socket-recvfrom.html" ACCESSKEY="N" >Próxima</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >stream_socket_get_name</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="ref.stream.html" ACCESSKEY="U" >Acima</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >stream_socket_recvfrom</TD ></TR ></TABLE ></DIV ></BODY ></HTML >