To compare php variables to determine whether they are the same or different.. you can use PHP Comparison Operators. See below for a list of examples..

I. Define the Variables

<?php
$num1 = 9;
$num2 = 9;
$num3 = 22;
?>

A. The Less Than Operator

<?php
//Returns true if variable in the left side is less than the right..
$res = ($num1 < $num3);
//returns true..
?>

B. The Greater Than Operator

<?php
//Returns true if the variable in left side is greater that the right..
$res = ($num3 > $num1);
//returns true..
?>

C. The Less Than or Equal-to Operator

<?php
//returns true if variable on left is less than or equal to right..
$res = ($num3 <= $num1);
//returns false
?>

D. The Greater Than or Equal-to Operator

<?php
//returns true if variable on left is greater than or equal to right..
$res = ($num3 >= $num2);
//returns true..
?>

E. The Equality Operator

<?php
//returns true if both variables are equal to each other
$res = ($num1 == $num2);
//returns true..
?>

F. The Not Equal-to Operator

<?php
//returns true if the variable on left is not equal to right
$res = ($num1 != $num2);
//returns false..
?>

G. The Inequality Operator

<?php
//returns true if the variable on left is not equal to right..
$res = ($num1 <> $num2);
//returns false..
?>

Tags: PHP, PHP Tutorials

This entry was posted on Tuesday, March 3rd, 2009 at 5:28 pm and is filed under PHP, PHP Tutorials, Tips and Tutorials. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.