<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >stream_socket_client</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_accept" HREF="function.stream-socket-accept.html"><LINK REL="NEXT" TITLE="stream_socket_enable_crypto" HREF="function.stream-socket-enable-crypto.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-accept.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-enable-crypto.html" ACCESSKEY="N" >Próxima</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="function.stream-socket-client" ></A >stream_socket_client</H1 ><DIV CLASS="refnamediv" ><A NAME="AEN217578" ></A ><P > (PHP 5)</P >stream_socket_client -- Open Internet or Unix domain socket connection </DIV ><DIV CLASS="refsect1" ><A NAME="AEN217581" ></A ><H2 >Description</H2 >resource <B CLASS="methodname" >stream_socket_client</B > ( string remote_socket [, int &errno [, string &errstr [, float timeout [, int flags [, resource context]]]]] )<BR ></BR ><P > Initiates a stream or datagram connection to the destination specified by <CODE CLASS="parameter" >remote_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. The optional <CODE CLASS="parameter" >timeout</CODE > can be used to set a timeout in seconds for the connect system call. <CODE CLASS="parameter" >flags</CODE > is a bitmask field which may be set to any combination of connection flags. Currently the selection of connection flags is limited to <TT CLASS="constant" ><B >STREAM_CLIENT_CONNECT</B ></TT > (default), <TT CLASS="constant" ><B >STREAM_CLIENT_ASYNC_CONNECT</B ></TT > and <TT CLASS="constant" ><B >STREAM_CLIENT_PERSISTENT</B ></TT >. </P ><DIV CLASS="note" ><BLOCKQUOTE CLASS="note" ><P ><B >Nota: </B > If you need to set a timeout for reading/writing data over the socket, use <A HREF="function.stream-set-timeout.html" ><B CLASS="function" >stream_set_timeout()</B ></A >, as the <CODE CLASS="parameter" >timeout</CODE > parameter to <B CLASS="function" >stream_socket_client()</B > only applies while connecting the socket. </P ></BLOCKQUOTE ></DIV ><DIV CLASS="note" ><BLOCKQUOTE CLASS="note" ><P ><B >Nota: </B > The timeout parameter only applies if you are not making an asynchronous connection attempt. </P ></BLOCKQUOTE ></DIV ><P > <B CLASS="function" >stream_socket_client()</B > returns a stream resource which may be used together with the other file functions (such as <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 >, and <A HREF="function.feof.html" ><B CLASS="function" >feof()</B ></A >). </P ><P > 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" >connect()</TT > call. 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" >connect()</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 > Depending on the environment, the Unix domain or the optional connect timeout 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" >Apêndice P</A > for a list of built in transports. </P ><P > The stream will by default be opened in blocking mode. You can switch it to non-blocking mode by using <A HREF="function.stream-set-blocking.html" ><B CLASS="function" >stream_set_blocking()</B ></A >. <TABLE WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" CLASS="EXAMPLE" ><TR ><TD ><DIV CLASS="example" ><A NAME="AEN217645" ></A ><P ><B >Exemplo 1. <B CLASS="function" >stream_socket_client()</B > Example</B ></P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" CELLPADDING="5" ><TR ><TD ><code><font color="#000000"> <font color="#0000BB"><?php<br />$fp </font><font color="#007700">= </font><font color="#0000BB">stream_socket_client</font><font color="#007700">(</font><font color="#DD0000">"tcp://www.example.com:80"</font><font color="#007700">, </font><font color="#0000BB">$errno</font><font color="#007700">, </font><font color="#0000BB">$errstr</font><font color="#007700">, </font><font color="#0000BB">30</font><font color="#007700">);<br />if (!</font><font color="#0000BB">$fp</font><font color="#007700">) {<br /> echo </font><font color="#DD0000">"$errstr ($errno)<br /></font><font color="#007700">\n</font><font color="#DD0000">"</font><font color="#007700">;<br />} else {<br /> </font><font color="#0000BB">fwrite</font><font color="#007700">(</font><font color="#0000BB">$fp</font><font color="#007700">, </font><font color="#DD0000">"GET / HTTP/1.0\r\nHost: www.example.com\r\nAccept: */*\r\n\r\n"</font><font color="#007700">);<br /> while (!</font><font color="#0000BB">feof</font><font color="#007700">(</font><font color="#0000BB">$fp</font><font color="#007700">)) {<br /> echo </font><font color="#0000BB">fgets</font><font color="#007700">(</font><font color="#0000BB">$fp</font><font color="#007700">, </font><font color="#0000BB">1024</font><font color="#007700">);<br /> }<br /> </font><font color="#0000BB">fclose</font><font color="#007700">(</font><font color="#0000BB">$fp</font><font color="#007700">);<br />}<br /></font><font color="#0000BB">?></font> </font> </code></TD ></TR ></TABLE ></DIV ></TD ></TR ></TABLE > The example below shows how to retrieve the day and time from the UDP service "daytime" (port 13) in your own machine. <TABLE WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" CLASS="EXAMPLE" ><TR ><TD ><DIV CLASS="example" ><A NAME="AEN217649" ></A ><P ><B >Exemplo 2. Using UDP connection</B ></P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" CELLPADDING="5" ><TR ><TD ><code><font color="#000000"> <font color="#0000BB"><?php<br />$fp </font><font color="#007700">= </font><font color="#0000BB">stream_socket_client</font><font color="#007700">(</font><font color="#DD0000">"udp://127.0.0.1:13"</font><font color="#007700">, </font><font color="#0000BB">$errno</font><font color="#007700">, </font><font color="#0000BB">$errstr</font><font color="#007700">);<br />if (!</font><font color="#0000BB">$fp</font><font color="#007700">) {<br /> echo </font><font color="#DD0000">"ERROR: $errno - $errstr<br /></font><font color="#007700">\n</font><font color="#DD0000">"</font><font color="#007700">;<br />} else {<br /> </font><font color="#0000BB">fwrite</font><font color="#007700">(</font><font color="#0000BB">$fp</font><font color="#007700">, </font><font color="#DD0000">"\n"</font><font color="#007700">);<br /> echo </font><font color="#0000BB">fread</font><font color="#007700">(</font><font color="#0000BB">$fp</font><font color="#007700">, </font><font color="#0000BB">26</font><font color="#007700">);<br /> </font><font color="#0000BB">fclose</font><font color="#007700">(</font><font color="#0000BB">$fp</font><font color="#007700">);<br />}<br /></font><font color="#0000BB">?></font> </font> </code></TD ></TR ></TABLE ></DIV ></TD ></TR ></TABLE > <DIV CLASS="warning" ><P ></P ><TABLE CLASS="warning" BORDER="1" WIDTH="100%" ><TR ><TD ALIGN="CENTER" ><B >Atenção</B ></TD ></TR ><TR ><TD ALIGN="LEFT" ><P > UDP sockets will sometimes appear to have opened without an error, even if the remote host is unreachable. The error will only become apparent when you read or write data to/from the socket. The reason for this is because UDP is a "connectionless" protocol, which means that the operating system does not try to establish a link for the socket until it actually needs to send or receive data. </P ></TD ></TR ></TABLE ></DIV > </P ><DIV CLASS="note" ><BLOCKQUOTE CLASS="note" ><P ><B >Nota: </B >Quando informando endereços IPv6 numéricos (por exemplo, fe80::1), você precisa englobar o IP entre colchetes. Exemplo: <TT CLASS="literal" > tcp://[fe80::1]:80</TT >.</P ></BLOCKQUOTE ></DIV ><P > See also <A HREF="function.stream-socket-server.html" ><B CLASS="function" >stream_socket_server()</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.stream-select.html" ><B CLASS="function" >stream_select()</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 ></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-accept.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-enable-crypto.html" ACCESSKEY="N" >Próxima</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >stream_socket_accept</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_enable_crypto</TD ></TR ></TABLE ></DIV ></BODY ></HTML >