class Overload {

public function __call($method, $arg) {

if($method == 'test') {

if (is_object($arg[0])) {

$this->testObject($arg[0]);

} else if (is_array($arg[0])) {

$this->testArray($arg[0]);

} else {

$this->testScalar($arg[0]);

}

}

}

function testObject($arg) {

echo $arg->test().'<br />';

}

function testArray($arg) {

echo implode(',',$arg).'<br />';

}

function testScalar($arg) {

echo $arg.'<br />';

}

}

$ov = new Overload;

$ov->test(new A());

$ov->test(array(1,2,3));

$ov->test('cat');

class A {

function test() {

return 'object';

}

}