Home Backend Development PHP Tutorial PHP反射类带参数执行反射对象方法传入参数函数示例解析。

PHP反射类带参数执行反射对象方法传入参数函数示例解析。

Jun 20, 2016 pm 12:34 PM

背景:对于kohana早期框架对类里面的before after以及controller和action的函数均可以用反射类来灵活按既定顺序执行,而在执行的时候假如异常,可以通过PHP提供的异常捕获进行捕获输出,这就涉及到类变对象后其参数的传递问题了,怎么给反射类里面的函数传递多参数乃至引用参数,这个PHP也提供了对应的反射类里函数传入的方法ReflectionMethod::invokeArgs。

使用代码片段如下:

$class = new ReflectionClass('Person'); // 建立 Person这个类的反射类 $instance  = $class->newInstanceArgs($args); // 相当于实例化Person 类 public stdclass newInstance(mixed* args)//测试传入的对象是否为该类的一个实例
Copy after login

参考更多相关反射的文章:

http://flandycheng.blog.51cto.com/855176/326021/

http://www.phperz.com/article/14/0809/17371.html

自己研究:http://justwinit.cn/post/2090/

ReflectionMethod::invokeArgs

(PHP 5 >= 5.1.0)

ReflectionMethod::invokeArgs — 带参数执行

说明

public mixed ReflectionMethod::invokeArgs ( object $object , array $args )

使用数组给方法传送参数,并执行他。

参数

object

调用方法的对象,如果是静态对象,设置为 null

args

使用 array 传送的方法参数。

返回值

返回方法返回值

错误/异常

如果 object 指定的实例无法执行方法,那么产生 ReflectionException 异常。

如果方法调用失败,产生 ReflectionException

范例

Example #1 ReflectionMethod::invokeArgs() example

class HelloWorld {

public function sayHelloTo($name) {

return 'Hello ' . $name;

}

}

$reflectionMethod = new ReflectionMethod('HelloWorld', 'sayHelloTo');

echo $reflectionMethod->invokeArgs(new HelloWorld(), array('Mike'));

?>

以上例程会输出:

Hello Mike

注释

Note:

如果函数有参数需为引用,那么它们必须以引用方式传入。

参见

ReflectionMethod::invoke() - Invoke

__invoke()

call_user_func_array() - 调用回调函数,并把一个数组参数作为回调函数的参数

来自:http://help.bitscn.com/php/reflectionmethod.invokeargs.html

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