This magic method is called when user tries to invoke object as a function. Possible use cases may include some approaches like functional programming or some callbacks.
class Invokable
{
/**
* This method will be called if object will be executed like a function:
*
* $invokable();
*
* Args will be passed as in regular method call.
*/
public function __invoke($arg, $arg, ...)
{
print_r(func_get_args());
}
}
// Example:
$invokable = new Invokable();
$invokable([1, 2, 3]);
// optputs:
Array
(
[0] => 1
[1] => 2
[2] => 3
)