Switch-Case Construct in PHP

PHP has a special switch-case construct, which is used to select one value from a range of values. Study its syntax:

<?php
	switch (variable) {
		case 'variant 1':
			/*
				code that will execute if
				the variable has value1
			*/
		break;
		case 'variant 2':
			/*
				code that will execute if
				the variable has value2
			*/
		break;
		case 'variant 3':
			/*
				code that will execute if
				the variable has value3
			*/
		break;
		default:
			/*
				code that will execute if
				it doesn't match any value
			*/
		break;
	}
?>

As you can see, switch-case is an alternative to multiple elseif statements. Let's look at an example. Suppose we have the following code:

<?php
	$num = 1;
	
	if ($num === 1) {
		echo 'variant 1';
	} elseif ($num === 2) {
		echo 'variant 2';
	} elseif ($num === 3) {
		echo 'variant 3';
	} else {
		echo 'variant not supported';
	}
?>

Let's rewrite this code using the switch-case construct:

<?php
	$num = 1;
	
	switch ($num) {
		case 1:
			echo 'variant 1';
		break;
		case 2:
			echo 'variant 2';
		break;
		case 3:
			echo 'variant 3';
		break;
		default:
			echo 'variant not supported';
		break;
	}
?>

The variable $num can take values 1, 2, 3 or 4. Determine which season the value of this variable falls into.