<HTML ><HEAD ><TITLE >dio_write</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.7"><LINK REL="HOME" TITLE="PHP Manual" HREF="index.html"><LINK REL="UP" TITLE="Direct IO functions" HREF="ref.dio.html"><LINK REL="PREVIOUS" TITLE="dio_truncate" HREF="function.dio-truncate.html"><LINK REL="NEXT" TITLE="Directory functions" HREF="ref.dir.html"><META HTTP-EQUIV="Content-type" CONTENT="text/html; charset=ISO-8859-1"></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 Manual</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="function.dio-truncate.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="ref.dir.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="function.dio-write" ></A >dio_write</H1 ><DIV CLASS="refnamediv" ><A NAME="AEN19852" ></A ><P > (PHP 4 >= 4.2.0)</P >dio_write -- Writes data to fd with optional truncation at length </DIV ><DIV CLASS="refsect1" ><A NAME="AEN19855" ></A ><H2 >Description</H2 >int <B CLASS="methodname" >dio_write</B > ( resource fd, string data [, int len])<BR ></BR ><P > The function <B CLASS="function" >dio_write()</B > writes up to <TT CLASS="parameter" ><I >len</I ></TT > bytes from <TT CLASS="parameter" ><I >data</I ></TT > to file <TT CLASS="parameter" ><I >fd</I ></TT >. If <TT CLASS="parameter" ><I >len</I ></TT > is not specified, <B CLASS="function" >dio_write()</B > writes all <TT CLASS="parameter" ><I >data</I ></TT > to the specified file. <B CLASS="function" >dio_write()</B > returns the number of bytes written to <TT CLASS="parameter" ><I >fd</I ></TT >. </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-truncate.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="ref.dir.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >dio_truncate</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="ref.dio.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >Directory functions</TD ></TR ></TABLE ></DIV ></BODY ></HTML >