The if Statement is the simplest conditional statements.
In if Statements Output will appear when only Condition must be true.
If Statement works much like the English language statement, “if X happens, then do Y.”
Syntax
if (condition) { code to be executed if condition is true; }
In the example below will output “Have a good day!” if the current time (HOUR) is less than 20:
<?php $t = date("H"); if ($t < "20") { echo "Have a good day!"; } ?>
Example to find the sum of even number between 1 to 100
<?php $sum=0; for($i=1;$i<=100;$i++) { if($i%2==0) { $sum=$sum+$i; } } echo $sum; ?>
Output: 2550