<?php
$t = date("H");
if ($t < "20") {
echo "Have a good day!";
}
?><?php
$t = date("H");
if ($t < "20") {
echo "Have a good day!";
} else {
echo "Have a good night!";
}
?><?php
$t = date("H");
if ($t < "10") {
echo "Have a good morning!";
} elseif ($t < "20") {
echo "Have a good day!";
} else {
echo "Have a good night!";
}
?>https://www.w3schools.com/php/php_if_else.asp