<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >dio_truncate</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_tcsetattr" HREF="function.dio-tcsetattr.html"><LINK REL="NEXT" TITLE="dio_write" HREF="function.dio-write.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-tcsetattr.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-write.html" ACCESSKEY="N" >Próxima</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="function.dio-truncate" ></A >dio_truncate</H1 ><DIV CLASS="refnamediv" ><A NAME="AEN33324" ></A ><P > (PHP 4 >= 4.2.0, PHP 5 <= 5.0.4)</P >dio_truncate -- Truncates file descriptor fd to offset bytes </DIV ><DIV CLASS="refsect1" ><A NAME="AEN33327" ></A ><H2 >Descrição</H2 >bool <B CLASS="methodname" >dio_truncate</B > ( resource fd, int offset )<BR ></BR ><P > <B CLASS="function" >dio_truncate()</B > truncates a file to at most <CODE CLASS="parameter" >offset</CODE > bytes in size. </P ><P > If the file previously was larger than this size, the extra data is lost. If the file previously was shorter, it is unspecified whether the file is left unchanged or is extended. In the latter case the extended part reads as zero bytes. </P ><DIV CLASS="note" ><BLOCKQUOTE CLASS="note" ><P ><B >Nota: </B >esta função não é implementada na plataforma Windows</P ></BLOCKQUOTE ></DIV ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN33344" ></A ><H2 >Parâmetros</H2 ><P > <P ></P ><DIV CLASS="variablelist" ><DL ><DT ><CODE CLASS="parameter" >fd</CODE ></DT ><DD ><P > The file descriptor returned by <A HREF="function.dio-open.html" ><B CLASS="function" >dio_open()</B ></A >. </P ></DD ><DT ><CODE CLASS="parameter" >offset</CODE ></DT ><DD ><P > The offset in bytes. </P ></DD ></DL ></DIV > </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN33359" ></A ><H2 >Valores de retornado</H2 ><P > Retorna <TT CLASS="constant" ><B >TRUE</B ></TT > em caso de sucesso ou <TT CLASS="constant" ><B >FALSE</B ></TT > em falhas. </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-tcsetattr.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-write.html" ACCESSKEY="N" >Próxima</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >dio_tcsetattr</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_write</TD ></TR ></TABLE ></DIV ></BODY ></HTML >