<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >dio_open</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="Direct IO Functions" HREF="ref.dio.html"><LINK REL="PREVIOUS" TITLE="dio_fcntl" HREF="function.dio-fcntl.html"><LINK REL="NEXT" TITLE="dio_read" HREF="function.dio-read.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.dio-fcntl.html" ACCESSKEY="P" >Anterior</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="function.dio-read.html" ACCESSKEY="N" >Próxima</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="function.dio-open" ></A >dio_open</H1 ><DIV CLASS="refnamediv" ><A NAME="AEN33020" ></A ><P > (PHP 4 >= 4.2.0, PHP 5 <= 5.0.4)</P >dio_open -- Opens a new filename with specified permissions of flags and creation permissions of mode </DIV ><DIV CLASS="refsect1" ><A NAME="AEN33023" ></A ><H2 >Descrição</H2 >resource <B CLASS="methodname" >dio_open</B > ( string filename, int flags [, int mode] )<BR ></BR ><P > <B CLASS="function" >dio_open()</B > opens a file and returns a new file descriptor for it. </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN33039" ></A ><H2 >Parâmetros</H2 ><P > <P ></P ><DIV CLASS="variablelist" ><DL ><DT ><CODE CLASS="parameter" >filename</CODE ></DT ><DD ><P > The opened file. </P ></DD ><DT ><CODE CLASS="parameter" >flags</CODE ></DT ><DD ><P > The <CODE CLASS="parameter" >flags</CODE > parameter can also include any combination of the following flags: <P ></P ><UL ><LI ><P > <TT CLASS="constant" ><B >O_CREAT</B ></TT > - creates the file, if it doesn't already exist. </P ></LI ><LI ><P > <TT CLASS="constant" ><B >O_EXCL</B ></TT > - if both, <TT CLASS="constant" ><B >O_CREAT</B ></TT > and <TT CLASS="constant" ><B >O_EXCL</B ></TT > are set, <B CLASS="function" >dio_open()</B > fails, if the file already exists. </P ></LI ><LI ><P > <TT CLASS="constant" ><B >O_TRUNC</B ></TT > - if the file exists, and its opened for write access, the file will be truncated to zero length. </P ></LI ><LI ><P > <TT CLASS="constant" ><B >O_APPEND</B ></TT > - write operations write data at the end of the file. </P ></LI ><LI ><P > <TT CLASS="constant" ><B >O_NONBLOCK</B ></TT > - sets non blocking mode. </P ></LI ></UL > </P ></DD ><DT ><CODE CLASS="parameter" >mode</CODE ></DT ><DD ><P > If <CODE CLASS="parameter" >flags</CODE > is <TT CLASS="constant" ><B >O_CREAT</B ></TT >, <CODE CLASS="parameter" >mode</CODE > will set the mode of the file (creation permissions). <P ></P ><UL ><LI ><P > <TT CLASS="constant" ><B >O_RDONLY</B ></TT > - opens the file for read access. </P ></LI ><LI ><P > <TT CLASS="constant" ><B >O_WRONLY</B ></TT > - opens the file for write access. </P ></LI ><LI ><P > <TT CLASS="constant" ><B >O_RDWR</B ></TT > - opens the file for both reading and writing. </P ></LI ></UL > </P ></DD ></DL ></DIV > </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN33091" ></A ><H2 >Valores de retornado</H2 ><P > A file descriptor or <TT CLASS="constant" ><B >FALSE</B ></TT > on error. </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN33095" ></A ><H2 >Exemplos</H2 ><TABLE WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" CLASS="EXAMPLE" ><TR ><TD ><DIV CLASS="example" ><A NAME="AEN33097" ></A ><P ><B >Exemplo 1. Opening a file descriptor</B ></P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" CELLPADDING="5" ><TR ><TD ><code><font color="#000000"> <font color="#0000BB"><?php<br /><br />$fd </font><font color="#007700">= </font><font color="#0000BB">dio_open</font><font color="#007700">(</font><font color="#DD0000">'/dev/ttyS0'</font><font color="#007700">, </font><font color="#0000BB">O_RDWR </font><font color="#007700">| </font><font color="#0000BB">O_NOCTTY </font><font color="#007700">| </font><font color="#0000BB">O_NONBLOCK</font><font color="#007700">);<br /><br /></font><font color="#0000BB">dio_close</font><font color="#007700">(</font><font color="#0000BB">$fd</font><font color="#007700">);<br /></font><font color="#0000BB">?></font> </font> </code></TD ></TR ></TABLE ></DIV ></TD ></TR ></TABLE ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN33100" ></A ><H2 >Veja também</H2 ><P > <P ></P ><TABLE BORDER="0" ><TBODY ><TR ><TD ><A HREF="function.dio-close.html" ><B CLASS="function" >dio_close()</B ></A ></TD ></TR ></TBODY ></TABLE ><P ></P > </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.dio-fcntl.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.dio-read.html" ACCESSKEY="N" >Próxima</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >dio_fcntl</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="ref.dio.html" ACCESSKEY="U" >Acima</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >dio_read</TD ></TR ></TABLE ></DIV ></BODY ></HTML >