ReflectionMethod::invoke

    (PHP 5, PHP 7, PHP 8)

    ReflectionMethod::invoke — Invoke

    Description

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

    Invokes a reflected method.

    Parameters

    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.

    Return Values

    Returns the method result.

    Errors/Exceptions

    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.

    Examples

    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');
    ?>

    The above example will output:

    Hello Mike

    Notes

    Note:

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

    See Also

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    User Contributed Notes 3 notes

    up
    16
    rojaro at gmail dot com
    13 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
    12 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
    13 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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