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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