PHP - The if...else Statement

Use the if....else statement to execute some code if a condition is true and another code if the condition is false.

Syntax

if (condition)
 {
  code to be executed if condition is true;
 }
else
 {
  code to be executed if condition is false;
 } 

Example

<?php
$t=date("H");
if ($t<"20")
  {
  echo "Have a good day!";
  }
else
  {
  echo "Have a good night!";
  }
?>