Читать книгу PHP Programming for Beginners. Key Programming Concepts. How to use PHP with MySQL and Oracle databases (MySqli, PDO) - Sergey D Skudaev - Страница 15

The if… else statement is used to execute different pieces of code under different conditions.

It has the following construction:

If (conditions) {

Do this.

} elseif (different condition) {

Do that.

} else {

Do something else.

}

Let us create a function that will print a message depending on temperature.

function weather ($F) {

if ($F> 78)

$message=“It is too hot!”;

elseif ($F <65)

$message=“It is too cold!”

else

$message=“Today is nice outside!”;

Return $message.”<br />”;

}

Let us call the function

echo weather (80);

Output: will be “It is too hot!”;

echo weather (60);

Output: will be “It is too cold!”;

echo weather (70);

Output: will be =“Today is nice outside!”;