<HTML ><HEAD ><TITLE >Operators</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.44"><LINK REL="HOME" TITLE="PHP Manual" HREF="manual.html"><LINK REL="UP" TITLE="Language Reference" HREF="langref.html"><LINK REL="PREVIOUS" TITLE="Expressions" HREF="language.expressions.html"><LINK REL="NEXT" TITLE="Assignment Operators" HREF="language.operators.assignment.html"></HEAD ><BODY 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="language.expressions.html" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="language.operators.assignment.html" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><DIV CLASS="chapter" ><H1 ><A NAME="language.operators" >Chapter 10. Operators</A ></H1 ><DIV CLASS="TOC" ><DL ><DT ><B >Table of Contents</B ></DT ><DT ><A HREF="language.operators.html#language.operators.arithmetic" >Arithmetic Operators</A ></DT ><DT ><A HREF="language.operators.assignment.html" >Assignment Operators</A ></DT ><DT ><A HREF="language.operators.bitwise.html" >Bitwise Operators</A ></DT ><DT ><A HREF="language.operators.comparison.html" >Comparison Operators</A ></DT ><DT ><A HREF="language.operators.errorcontrol.html" >Error control Operators</A ></DT ><DT ><A HREF="language.operators.execution.html" >Execution Operators</A ></DT ><DT ><A HREF="language.operators.increment.html" >Incrementing/Decrementing Operators</A ></DT ><DT ><A HREF="language.operators.logical.html" >Logical Operators</A ></DT ><DT ><A HREF="language.operators.precedence.html" >Operator Precedence</A ></DT ><DT ><A HREF="language.operators.string.html" >String Operators</A ></DT ></DL ></DIV ><P > </P ><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" ><P ><B >Table 10-1. Arithmetic Operators</B ></P ><TABLE BORDER="1" CLASS="CALSTABLE" ><TR ><TH ALIGN="LEFT" VALIGN="MIDDLE" >example</TH ><TH ALIGN="LEFT" VALIGN="MIDDLE" >name</TH ><TH ALIGN="LEFT" VALIGN="MIDDLE" >result</TH ></TR ><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 ></TABLE ></DIV ></DIV ></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="language.expressions.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="language.operators.assignment.html" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >Expressions</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="langref.html" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >Assignment Operators</TD ></TR ></TABLE ></DIV ></BODY ></HTML >