Comparisons are used to check the relationship between variables and/or values. Comparison operators are used inside conditional statements and evaluate to either true or false. Here are the most important comparison operators of PHP.
Operator | Desc | Example | Result |
== | Equal To | $x == $y | false |
!= | Not Equal To | $x != $y | true |
< | Less Than | $x < $y | true |
> | Greater Than | $x > $y | false |
<= | Less Than or Equal To | $x <= $y | true |
>= | Greater Than or Equal To | $x >= $y | false |
Check out this example:
<?php
$a=10;
$b=17;
/*
$a=17;
$b=10;
*/
echo “<br>A is : “.$a;
echo “<br>B is : “.$b;
echo “<br><br>”;
if($a==$b)
{
echo”<br>A equals B.”;//it wont be true
}
if($a != $b){
echo “<br>A is not equals to B.”;//it will be true
}
if($a < $b){
echo “<br>A is less than B;”;
}
if($a > $b){
echo “<br>A is greater than B;”;
}
if($a <= $b){
echo “<br>A is less than or equals to B;”;
}
if($a >= $b){
echo “<br>A is greater than or equals to B;”;
}
?>