Sophie: php-manual-en-4.3.0-2mdk noarch

php-manual-en-4.3.0-2mdk.noarch.rpm

<HTML
><HEAD
><TITLE
>pi</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="Mathematical Functions"
HREF="ref.math.html"><LINK
REL="PREVIOUS"
TITLE="octdec"
HREF="function.octdec.html"><LINK
REL="NEXT"
TITLE="pow"
HREF="function.pow.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.octdec.html"
ACCESSKEY="P"
>Prev</A
></TD
><TD
WIDTH="80%"
ALIGN="center"
VALIGN="bottom"
></TD
><TD
WIDTH="10%"
ALIGN="right"
VALIGN="bottom"
><A
HREF="function.pow.html"
ACCESSKEY="N"
>Next</A
></TD
></TR
></TABLE
><HR
ALIGN="LEFT"
WIDTH="100%"></DIV
><H1
><A
NAME="function.pi"
></A
>pi</H1
><DIV
CLASS="refnamediv"
><A
NAME="AEN45097"
></A
><P
>    (PHP 3, PHP 4 )</P
>pi&nbsp;--&nbsp;Get value of pi</DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN45100"
></A
><H2
>Description</H2
>float <B
CLASS="methodname"
>pi</B
> ( void)<BR
></BR
><P
>&#13;     Returns an approximation of pi.  The returned <A
HREF="language.types.float.html"
><B
CLASS="type"
>float</B
></A
> 
     has a precision based on the 
     <A
HREF="configuration.directives.html#ini.precision"
>precision</A
> directive in
     <TT
CLASS="filename"
>php.ini</TT
>, which defaults to <TT
CLASS="literal"
>14</TT
>.  
     Also, you can use the <TT
CLASS="constant"
><B
>M_PI</B
></TT
> constant which yields 
     identical results to <B
CLASS="function"
>pi()</B
>.
    </P
><P
>&#13;    <DIV
CLASS="informalexample"
><A
NAME="AEN45114"
></A
><P
></P
><TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
CELLPADDING="5"
><TR
><TD
><PRE
CLASS="programlisting"
>echo pi(); // 3.1415926535898
echo M_PI; // 3.1415926535898</PRE
></TD
></TR
></TABLE
><P
></P
></DIV
>
   </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.octdec.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="function.pow.html"
ACCESSKEY="N"
>Next</A
></TD
></TR
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
>octdec</TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="ref.math.html"
ACCESSKEY="U"
>Up</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
>pow</TD
></TR
></TABLE
></DIV
></BODY
></HTML
>