ReflectionFunction::invoke

    (PHP 5, PHP 7, PHP 8)

    ReflectionFunction::invoke — Invokes function

    Опис

    public ReflectionFunction::invoke(mixed ...$args): mixed

    Invokes a reflected function.

    Параметри

    args

    The passed in argument list. It accepts a variable number of arguments which are passed to the function much like call_user_func() is.

    Значення, що повертаються

    Returns the result of the invoked function call.

    Приклади

    Приклад #1 ReflectionFunction::invoke() example

    <?php
    function title($title, $name)
    {
    return     sprintf("%s. %s\r\n", $title, $name);
    }

    $function = new ReflectionFunction('title');

    echo     $function->invoke('Dr', 'Phil');
    ?>

    Поданий вище приклад виведе:

    Dr. Phil

    Примітки

    Зауваження:

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

    Прогляньте також

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    User Contributed Notes 1 note

    up
    0
    spark at limao dot com dot br
    13 years ago
    I know Reflections classes have a lot of power, but sometimes all we need is to store a annonymus function or even create a simple callback somewhere.

    so here it is, the Callback class:
    <?php
    class Callback{
    private     $name = false;

    public function     Callback($obj,$call=false){
    $name = array($obj);
    if(    $call) $name[] = $call;

    $this->name = $name;
    }
    public function     invoke($params=array()){
    return     call_user_func_array($this->name,$params);
    }
    }
    ?>

    Usage:
    <?php
    function sayName(){
    return     "goku";
    }

    $myVar = new Callback("sayName");

    echo     "Hi, I am ".$myVar->invoke()."!";

    //also works with methods: new Callback($obj,"method");
    ?>
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