<HTML ><HEAD ><TITLE >PHP input/output streams</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="List of Supported Protocols/Wrappers" HREF="wrappers.html"><LINK REL="PREVIOUS" TITLE="FTP and FTPS" HREF="wrappers.ftp.html"><LINK REL="NEXT" TITLE="Compression Streams" HREF="wrappers.compression.html"><META HTTP-EQUIV="Content-type" CONTENT="text/html; charset=ISO-8859-1"></HEAD ><BODY CLASS="section" 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="wrappers.ftp.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" >Appendix I. List of Supported Protocols/Wrappers</TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="wrappers.compression.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><DIV CLASS="section" ><H1 CLASS="section" ><A NAME="wrappers.php" ></A >PHP input/output streams</H1 ><P > PHP 3.0.13 and up, <TT CLASS="filename" >php://output</TT > and <TT CLASS="filename" >php://input</TT > since PHP 4.3 </P ><P ></P ><UL ><LI ><P ><TT CLASS="filename" >php://stdin</TT ></P ></LI ><LI ><P ><TT CLASS="filename" >php://stdout</TT ></P ></LI ><LI ><P ><TT CLASS="filename" >php://stderr</TT ></P ></LI ><LI ><P ><TT CLASS="filename" >php://output</TT ></P ></LI ><LI ><P ><TT CLASS="filename" >php://input</TT ></P ></LI ></UL ><P > <TT CLASS="filename" >php://stdin</TT >, <TT CLASS="filename" >php://stdout</TT > and <TT CLASS="filename" >php://stderr</TT > allow access to the corresponding input or output stream of the PHP process. </P ><P > <TT CLASS="filename" >php://output</TT > allows you to write to the output buffer mechanism in the same way as <A HREF="function.print.html" ><B CLASS="function" >print()</B ></A > and <A HREF="function.echo.html" ><B CLASS="function" >echo()</B ></A >. </P ><P > <TT CLASS="filename" >php://input</TT > allows you to read raw POST data. It is a less memory intensive alternative to <TT CLASS="varname" >$HTTP_RAW_POST_DATA</TT > and does not need any special <TT CLASS="filename" >php.ini</TT > directives. </P ><P > <TT CLASS="filename" >php://stdin</TT > and <TT CLASS="filename" >php://input</TT > are read-only, whereas <TT CLASS="filename" >php://stdout</TT >, <TT CLASS="filename" >php://stderr</TT > and <TT CLASS="filename" >php://output</TT > are write-only. </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="wrappers.ftp.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="wrappers.compression.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >FTP and FTPS</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="wrappers.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >Compression Streams</TD ></TR ></TABLE ></DIV ></BODY ></HTML >