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Dokumen ini menggunakan Manual laman web PHP Cina Lepaskan
(PHP 5)
ReflectionClass::isInstantiable — 检查类是否可实例化
检查这个类是否可实例化。
此函数没有参数。
成功时返回 TRUE
, 或者在失败时返回 FALSE
。
Example #1 ReflectionClass::isInstantiable() 例子
<?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 ());
}
?>
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)