Logical Operators

Logical operators are used to evaluate several comparisons, by combining their possible values.

Operator	Name	Example	Returns true when:
&&	Y	(7>2) && (2<4)	Returns true when both conditions are true.
and	Y	(7>2) and (2<4)	Returns true when both conditions are true.
\|\|	O	(7>2) \|\| (2<4)	Returns true when at least one of the two conditions is true.
or	O	(7>2) or (2<4)	Returns true when at least one of the two conditions is true.
!	No	! (7>2)	Denies the value of the expression.

<html>
<head>
   <title>PHP Example</title>
</head>
<body>
<?php
   $a = 8;
   $b = 3;
   $c = 3;
   echo ($a == $b) && ($c > $b),"<br>";
   echo ($a == $b) || ($b == $c),"<br>";
   echo !($b <= $c),"<br>";
?>
</body>
</html>

Execute View code

Comparison Operators