<?php
class Foo
{
public static function barStatic()
{
}
public function bar()
{
}
}
$foo = new Foo();
var_dump(is_callable(array($foo, 'bar')));
var_dump(is_callable(array($foo, 'barStatic')));
var_dump(is_callable(array('Foo', 'bar')));
var_dump(is_callable(array('Foo', 'barStatic')));