ReflectionFunction::invokeArgs()

(PHP 5 >= 5.1.2, PHP 7)

Invokes function args

说明

Invokes the function and pass its arguments as array.

参数

The passed arguments to the function as an array, much likecall_user_func_array()works.

返回值

Returns the result of the invoked function

范例

Example #1ReflectionFunction::invokeArgs()example

以上例程会输出：

Dr. Phil

Example #2ReflectionFunction::invokeArgs()with references example

以上例程会输出：

array(2) {
  [0]=>
  bool(false)
  [1]=>
  int(0)
}

注释

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

• ReflectionFunction::invoke() Invokes function
• ReflectionFunctionAbstract::getNumberOfParameters() 获取参数数目
• __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

In the case of call_user_func_array(), if you were to pass around an anonymous function and reference $this within the anonymous function, $this will faithfully refer to the class in the context in which the function was defined. Using ReflectionFunction::invokeArgs() does not seem to retain its original context--yeah, even if you bind the anonymous function before invoking. I recommend call_user_func_array() where context is a concern.

I encountered a weird problem with ReflectionFunction, described in ticket 44139 of PHP Bugs.
If for some reason you need to call with invoke, or invokeArgs, a function like array_unshift (that accepts internally the array by reference) you could use this code to avoid the generated warning or fatal error.

I don't know about performances (you can create an array manually too, starting from array(&$this->something) and adding arguments). However, it seems to work correctly without problems, at least until the send by reference will be usable with one single value ...

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