ReflectionFunction::invoke

(PHP 5, PHP 7, PHP 8)

ReflectionFunction::invokeInvokes function

Descrizione

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

Invokes a reflected function.

Elenco dei parametri

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.

Valori restituiti

Returns the result of the invoked function call.

Esempi

Example #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');
?>

Il precedente esempio visualizzerĂ :

Dr. Phil

Note

Nota:

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

Vedere anche:

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User Contributed Notes 1 note

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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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