ReflectionClass::isInstantiable
(PHP 5, PHP 7)
ReflectionClass::isInstantiable - 检查类是否可实例化
描述
public bool ReflectionClass::isInstantiable ( void )检查该类是否可实例化。
参数
该函数没有参数。
返回值
成功时返回TRUE或失败时返回FALSE。
例子
示例＃1 ReflectionClass::isInstantiable()示例
<?php
class?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());?
}
?>上面的例子将输出：
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)另请参阅
- ReflectionClass::isInstance() - 检查类的实例
← ReflectionClass::isInstance
ReflectionClass::isInterface →
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