<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <HTML ><HEAD ><TITLE >Arithmetic Operators</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.7"><LINK REL="HOME" TITLE="PHP Handleiding" HREF="index.html"><LINK REL="UP" TITLE="Operators" HREF="language.operators.html"><LINK REL="PREVIOUS" TITLE="Operators" HREF="language.operators.html"><LINK REL="NEXT" TITLE="Assignment Operators" HREF="language.operators.assignment.html"><META HTTP-EQUIV="Content-type" CONTENT="text/html; charset=ISO-8859-1"></HEAD ><BODY CLASS="sect1" 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 Handleiding</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="language.operators.html" ACCESSKEY="P" >Terug</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" >Hoofdstuk 10. Operators</TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="language.operators.assignment.html" ACCESSKEY="N" >Volgende</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><DIV CLASS="sect1" ><H1 CLASS="sect1" ><A NAME="language.operators.arithmetic" >Arithmetic Operators</A ></H1 ><P > Remember basic arithmetic from school? These work just like those. </P ><DIV CLASS="table" ><A NAME="AEN3659" ></A ><P ><B >Tabel 10-2. Arithmetic Operators</B ></P ><TABLE BORDER="1" CLASS="CALSTABLE" ><COL><COL><COL><THEAD ><TR ><TH >Example</TH ><TH >Name</TH ><TH >Result</TH ></TR ></THEAD ><TBODY ><TR ><TD >-$a</TD ><TD >Negation</TD ><TD >Opposite of $a.</TD ></TR ><TR ><TD >$a + $b</TD ><TD >Addition</TD ><TD >Sum of $a and $b.</TD ></TR ><TR ><TD >$a - $b</TD ><TD >Subtraction</TD ><TD >Difference of $a and $b.</TD ></TR ><TR ><TD >$a * $b</TD ><TD >Multiplication</TD ><TD >Product of $a and $b.</TD ></TR ><TR ><TD >$a / $b</TD ><TD >Division</TD ><TD >Quotient of $a and $b.</TD ></TR ><TR ><TD >$a % $b</TD ><TD >Modulus</TD ><TD >Remainder of $a divided by $b.</TD ></TR ></TBODY ></TABLE ></DIV ><P > The division operator ("/") returns a float value anytime, even if the two operands are integers (or strings that get converted to integers). </P ><P > See also the manual page on <A HREF="ref.math.html" >Math functions</A >. </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="language.operators.html" ACCESSKEY="P" >Terug</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >Begin</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="language.operators.assignment.html" ACCESSKEY="N" >Volgende</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >Operators</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="language.operators.html" ACCESSKEY="U" >Omhoog</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >Assignment Operators</TD ></TR ></TABLE ></DIV ></BODY ></HTML >