本文整理汇总了PHP中Vehicle::wheels方法的典型用法代码示例。如果您正苦于以下问题：PHP Vehicle::wheels方法的具体用法？PHP Vehicle::wheels怎么用？PHP Vehicle::wheels使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类Vehicle的用法示例。
在下文中一共展示了Vehicle::wheels方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的PHP代码示例。
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
{
}