<HTML ><HEAD ><TITLE >Arithmetic Operators</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="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 Manual</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="language.operators.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" >Chapter 11. Operators</TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="language.operators.assignment.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><DIV CLASS="sect1" ><H1 CLASS="sect1" ><A NAME="language.operators.arithmetic" ></A >Arithmetic Operators</H1 ><P > Remember basic arithmetic from school? These work just like those. </P ><DIV CLASS="table" ><A NAME="AEN4474" ></A ><P ><B >Table 11-2. Arithmetic Operators</B ></P ><TABLE BORDER="1" CLASS="CALSTABLE" ><THEAD ><TR ><TH ALIGN="LEFT" VALIGN="MIDDLE" >Example</TH ><TH ALIGN="LEFT" VALIGN="MIDDLE" >Name</TH ><TH ALIGN="LEFT" VALIGN="MIDDLE" >Result</TH ></TR ></THEAD ><TBODY ><TR ><TD ALIGN="LEFT" VALIGN="MIDDLE" >$a + $b</TD ><TD ALIGN="LEFT" VALIGN="MIDDLE" >Addition</TD ><TD ALIGN="LEFT" VALIGN="MIDDLE" >Sum of $a and $b.</TD ></TR ><TR ><TD ALIGN="LEFT" VALIGN="MIDDLE" >$a - $b</TD ><TD ALIGN="LEFT" VALIGN="MIDDLE" >Subtraction</TD ><TD ALIGN="LEFT" VALIGN="MIDDLE" >Difference of $a and $b.</TD ></TR ><TR ><TD ALIGN="LEFT" VALIGN="MIDDLE" >$a * $b</TD ><TD ALIGN="LEFT" VALIGN="MIDDLE" >Multiplication</TD ><TD ALIGN="LEFT" VALIGN="MIDDLE" >Product of $a and $b.</TD ></TR ><TR ><TD ALIGN="LEFT" VALIGN="MIDDLE" >$a / $b</TD ><TD ALIGN="LEFT" VALIGN="MIDDLE" >Division</TD ><TD ALIGN="LEFT" VALIGN="MIDDLE" >Quotient of $a and $b.</TD ></TR ><TR ><TD ALIGN="LEFT" VALIGN="MIDDLE" >$a % $b</TD ><TD ALIGN="LEFT" VALIGN="MIDDLE" >Modulus</TD ><TD ALIGN="LEFT" VALIGN="MIDDLE" >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 ></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" >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="language.operators.assignment.html" ACCESSKEY="N" >Next</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" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >Assignment Operators</TD ></TR ></TABLE ></DIV ></BODY ></HTML >