ReflectionMethod::invoke

(PHP 5, PHP 7, PHP 8)

ReflectionMethod::invokeInvoke

Descrizione

public ReflectionMethod::invoke(?object $object, mixed ...$args): mixed

Invokes a reflected method.

Elenco dei parametri

object

The object to invoke the method on. For static methods, pass null to this parameter.

args

Zero or more parameters to be passed to the method. It accepts a variable number of parameters which are passed to the method.

Valori restituiti

Returns the method result.

Errori/Eccezioni

A ReflectionException if the object parameter does not contain an instance of the class that this method was declared in.

A ReflectionException if the method invocation failed.

Esempi

Example #1 ReflectionMethod::invoke() example

<?php
class HelloWorld {

    public function 
sayHelloTo($name) {
        return 
'Hello ' $name;
    }

}

$reflectionMethod = new ReflectionMethod('HelloWorld''sayHelloTo');
echo 
$reflectionMethod->invoke(new HelloWorld(), 'Mike');
?>

Il precedente esempio visualizzerĂ :

Hello Mike

Note

Nota:

ReflectionMethod::invoke() cannot be used when reference parameters are expected. ReflectionMethod::invokeArgs() has to be used instead (passing references in the argument list).

Vedere anche:

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User Contributed Notes 3 notes

up
17
rojaro at gmail dot com
11 years ago
Note: If you want to invoke protected or private methods, you'll first have to make them accessible using the setAccessible() method (see http://php.net/reflectionmethod.setaccessible ).
up
8
dimitriy at remerov dot ru
10 years ago
This method can be used to call a overwritten public method of a parent class on an child instance
The following code will output "A":

<?php

class A
{
    public function
foo()
    {
        return
__CLASS__;
    }
}

class
B extends A
{
    public function
foo()
    {
        return
__CLASS__;
    }
}

$b = new B();

$reflection = new ReflectionObject($b);

$parentReflection = $reflection->getParentClass();

$parentFooReflection = $parentReflection->getMethod('foo');

$data = $parentFooReflection->invoke($b);

echo
$data;

?>
up
0
templargrey at wp dot pl
11 years ago
Seems that Reflection doesn`t resolve late static bindings - var_dump will show "string 'a' (length=1)".

<?php
class ParentClass { protected static $a = 'a'; static public function init() { return static::$a; } }
class
ChildClass extends ParentClass { protected static $a = 'b'; }
   
$r = new ReflectionClass('ChildClass');
var_dump($r->getMethod('init')->invoke(null));
?>
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