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($obj,"method");
?>
ReflectionFunction::invoke
(PHP 5, PHP 7, PHP 8)
ReflectionFunction::invoke — Invokes function
Elenco dei parametri
-
args -
The passed in argument list. It accepts a variable number of arguments which are passed to the function much like call_user_func() is.
Valori restituiti
Returns the result of the invoked function call.
Esempi
Example #1 ReflectionFunction::invoke() example
<?php
function title($title, $name)
{
return sprintf("%s. %s\r\n", $title, $name);
}
$function = new ReflectionFunction('title');
echo $function->invoke('Dr', 'Phil');
?>Il precedente esempio visualizzerà:
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:
- ReflectionFunction::export() - Exports function
- __invoke()
- call_user_func() - Call the callback given by the first parameter
add a note
User Contributed Notes 1 note
spark at limao dot com dot br ¶
13 years ago
