本文整理匯總了PHP中Vehicle::wheels方法的典型用法代碼示例。如果您正苦於以下問題：PHP Vehicle::wheels方法的具體用法？PHP Vehicle::wheels怎麽用？PHP Vehicle::wheels使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類Vehicle的用法示例。
在下文中一共展示了Vehicle::wheels方法的1個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的PHP代碼示例。
示例1: lorry
// $car->wheels;
// However, if the variable or method is 'static' we can access it directly in the class without an instance
// Note: with static methods you can't use $this!
class Vehicle
{
public static $wheels = 4;
public static function lorry()
{
// $wheels = 12; // If a NORMAL var is declared here, it can be accessed normally; but mixing normal and static vars and methods is probably not a good idea.
// If trying to use a static variable, you must use the static :: notation, even within a method
echo Vehicle::$wheels . "<br>";
}
}
echo Vehicle::$wheels . "<br>";
Vehicle::lorry();
Vehicle::$wheels = 18;
echo Vehicle::$wheels . "<br>";
Vehicle::lorry();
echo "<hr>";
// Using static variables with class extension is NOT the same as using different instances
// Take this example:
class One
{
static $foo;
}
class Two extends One
{
}
class Three extends One
{
}