The code will output "Have a nice weekend!" if the current day is Friday, and "Have a nice Sunday!" if the current day is Sunday, otherwise it will output "Have a nice day!"

$d = date("D");
if($d == "Fri"){
    echo "Have a nice weekend!";
} elseif($d == "Sun"){
    echo "Have a nice Sunday!";
} else{
    echo "Have a nice day!";
}
echo "\n";

Outputs

Have a good morning!

if the current time is less than 10, and

Have a good day!

if the current time is less than 20. Otherwise it will output

Have a good night!

$t = date("H");
if ($t < "10") {
	echo "Have a good morning!";
} elseif ($t < "20") {
	echo "Have a good day!";
} else {
	echo "Have a good night!";
}

Prints

Adult

If

$age

is more than

18

, and

Teenager

if the variable is less than 12. Otherwise it prints

Child

$age = 20;
if ($age > 18) {
    echo 'Adult';
} else if ($age > 12) {
    echo 'Teenager';
} else {
    echo 'Child';
}