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<HTML
><HEAD
><TITLE
>Cookies</TITLE
><META
NAME="GENERATOR"
CONTENT="Modular DocBook HTML Stylesheet Version 1.57"><LINK
REL="HOME"
TITLE="PHP Manual"
HREF="manual.html"><LINK
REL="UP"
TITLE="Features"
HREF="features.html"><LINK
REL="PREVIOUS"
TITLE="HTTP authentication with PHP"
HREF="features.http-auth.html"><LINK
REL="NEXT"
TITLE="Handling file uploads"
HREF="features.file-upload.html"><META
NAME="HTTP_EQUIV"
CONTENT="text/html; charset=ISO-8859-1"></HEAD
><BODY
CLASS="chapter"
BGCOLOR="#FFFFFF"
TEXT="#000000"
LINK="#0000FF"
VLINK="#840084"
ALINK="#0000FF"
><DIV
CLASS="NAVHEADER"
><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="features.http-auth.html"
>Prev</A
></TD
><TD
WIDTH="80%"
ALIGN="center"
VALIGN="bottom"
></TD
><TD
WIDTH="10%"
ALIGN="right"
VALIGN="bottom"
><A
HREF="features.file-upload.html"
>Next</A
></TD
></TR
></TABLE
><HR
ALIGN="LEFT"
WIDTH="100%"></DIV
><DIV
CLASS="chapter"
><H1
><A
NAME="features.cookies"
>Chapter 18. Cookies</A
></H1
><P
> PHP transparently supports HTTP cookies. Cookies are a mechanism
for storing data in the remote browser and thus tracking
or identifying return users. You can set cookies using the
<A
HREF="function.setcookie.html"
><B
CLASS="function"
>setcookie()</B
></A
> function. Cookies are part of the
HTTP header, so <A
HREF="function.setcookie.html"
><B
CLASS="function"
>setcookie()</B
></A
> must be called before
any output is sent to the browser. This is the same limitation that
<A
HREF="function.header.html"
><B
CLASS="function"
>header()</B
></A
> has.</P
><P
> Any cookies sent to you from the client will automatically be
turned into a PHP variable just like GET and POST method data. If
you wish to assign multiple values to a single cookie, just add
<I
CLASS="emphasis"
>[]</I
> to the cookie name. For more details see
the <A
HREF="function.setcookie.html"
><B
CLASS="function"
>setcookie()</B
></A
> function.</P
></DIV
><DIV
CLASS="NAVFOOTER"
><HR
ALIGN="LEFT"
WIDTH="100%"><TABLE
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
><A
HREF="features.http-auth.html"
>Prev</A
></TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="manual.html"
>Home</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
><A
HREF="features.file-upload.html"
>Next</A
></TD
></TR
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
>HTTP authentication with PHP</TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="features.html"
>Up</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
>Handling file uploads</TD
></TR
></TABLE
></DIV
></BODY
></HTML
>
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