16.7 Operators

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	Webmaster in a Nutshell, 3rd Edition By Robert Eckstein, Stephen Spainhour
	Table of Contents
	Chapter 16.  PHP

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16.7 Operators

Expressions are combined and manipulated using operators. The following table lists the operators from highest to lowest precedence; the second column (A) shows the operators' associativity. These operators should be familiar to you if you have any C, Java, or Perl experience.

Operators	Associativity
!, ~, ++, --, @, (the casting operators)	Right
*, /, %	Left
+, -, .	Left
<<, >>	Left
<, <=, >=, >	Nonassociative
==, !=, ===, !==	Nonassociative
&	Left
^	Left
	Left
&&	Left
	Left
? : (conditional operator)	Left
=, +=, -=, *=, /=, %=, ^=, .=, &=, =, <<=, >>=	Left
AND	Left
XOR	Left
OR	Left

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