Php/docs/reflectionclass.isinstantiable
ReflectionClass::isInstantiable
(PHP 5, PHP 7)
ReflectionClass::isInstantiable — 检查类是否可实例化
说明
public ReflectionClass::isInstantiable ( ) : bool
检查这个类是否可实例化。
参数
此函数没有参数。
返回值
成功时返回 true， 或者在失败时返回 false。
范例
Example #1 ReflectionClass::isInstantiable() 例子
<?phpclass C { }interface iface { function f1();}class ifaceImpl implements iface { function f1() {}}abstract class abstractClass { function f1() { } abstract function f2();}class D extends abstractClass { function f2() { }}class privateConstructor { private function __construct() { }}$classes = array( "C", "iface", "ifaceImpl", "abstractClass", "D", "privateConstructor",);foreach($classes as $class ) { $reflectionClass = new ReflectionClass($class); echo "Is $class instantiable? "; var_dump($reflectionClass->IsInstantiable()); }?>
以上例程会输出：
Is C instantiable? bool(true) Is iface instantiable? bool(false) Is ifaceImpl instantiable? bool(true) Is abstractClass instantiable? bool(false) Is D instantiable? bool(true) Is privateConstructor instantiable? bool(false)
