Operator Definition
== Equal to
!= Not equal to
> Greater than
< Less than
>= Greater than or equal to
<= Less than or equal to
Example:
<HTML>
<HEAD>
<TITLE>Using Comparison Operators</TITLE>
</HEAD>
<BODY>
<?
$a = 21;
$b = 15;
echo “<P>Original value of $a is $a and $b is $b</P>”;
if ($a == $b) {
echo “<P>TEST 1: $a equals $b</P>”;
} else {
echo “<P>TEST 1: $a is not equal to $b</P>”;
}
if ($a != $b) {
echo “<P>TEST 2: $a is not equal to $b</P>”;
} else {
echo “<P>TEST 2: $a is equal to $b</P>”;
}
if ($a > $b) {
echo “<P>TEST 3: $a is greater than $b</P>”;
} else {
echo “<P>TEST 3: $a is not greater than $b</P>”;
}
if ($a < $b) {
echo “<P>TEST 4: $a is less than $b</P>”;
} else {
echo “<P>TEST 4: $a is not less than $b</P>”;
}
if ($a >= $b) {
echo “<P>TEST 5: $a is greater than or equal to $b</P>”;
} else {
echo “<P>TEST 5: $a is not greater than or equal to $b</P>”;
}
if ($a <= $b) {
echo “<P>TEST 6: $a is less than or equal to $b</P>”;
} else {
echo “<P>TEST 6: $a is not less than or equal to $b</P>”;
}
?>
</BODY>
</HTML>
