2. PHP Operators

1.     Commonly Used Arithmetic Operators

                <?php

$n1=5;

$n2=2;

            $SUM=$n1+$n2;

            $DIFF=$n1-$n2;

            $PRODUCT=$n1*$n2;

            $QUOTIENT=$n1/$n2;

            $REMAINDER=$n1%$n2;

?>

2.     Relational Operators

==Equal to (the same as)

!=Not equal to (not the same as)

> Greater than (more, bigger, larger, higher, longer than, exceeds, over

< Less than (smaller, fewer, lower, shorter than, below)

>=Greater than or equal to (at least)

<=Less than or equal to (at most)

Example:

<?php           

                        $a=5;$b=3;

                        echo $a==$b;

                        echo $a!=$b;

                        echo $a>$b;

                        echo $a<$b;

                        echo $a>=$b;

                        echo $a<=$b;

?>

3.     Logical Operators

•       ! (NOT) Negation (Priority -1)                                             

•       && (AND) Logical Multiplication  (Priority -2)  

•       || (OR)Logical Addition (Priority -3)

Example:

                <?php

                                $a=5;$b=3;

                                echo !($a==$b);

                                echo $a>$b && $a<=$b;

                                echo $a<$b || $a>=$b;

                 ?>