public static function main()
{
$color1 = Color::BLUE();
$color2 = Color::YELLOW();
$color3 = Color::BLUE();
self::displayColor($color1);
self::displayColor($color2);
self::displayColor($color3);
self::compareColor($color1, $color2);
self::compareColor($color2, $color3);
self::compareColor($color1, $color3);
self::compareColor($color1, $color1);
switch ($color1) {
case Color::RED():
echo 'red' . "\n";
break;
case Color::ORANGE():
echo 'orange' . "\n";
break;
case Color::YELLOW():
echo 'yellow' . "\n";
break;
case Color::GREEN():
echo 'green' . "\n";
break;
case Color::BLUE():
echo 'blue' . "\n";
break;
case Color::INDIGO():
echo 'indigo' . "\n";
break;
case Color::VIOLET():
echo 'violet' . "\n";
break;
}
try {
$invalidColor = Color::BLACK();
} catch (\BadFunctionCallException $e) {
echo 'error : ' . $e->getMessage() . "\n";
}
}
/**
* Demonstrate type hinting against Enum implementation by saying something nice about the
* received Color.
*
* @param Color $color The color to say something nice about.
*
* @return void
*/
function saySomethingNice(Color $color)
{
switch ($color) {
case Color::RED():
$something_nice = ' is like the love of a rose petal.';
break;
case Color::BLUE():
$something_nice = ' is like a deep sea on a sunny day.';
break;
default:
$something_nice = ' is a wonderful color.';
break;
}
echo 'The color ' . $color->getName() . $something_nice . "<br />\n";
}