PHP – The if…else Statement

The if…else statement executes some code if a condition is true and another code if that condition is false.

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

<?php
$t = date("H");

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