Find out if a method exists in a static class

Question

I want to check is a function exists in a library that I am creating, which is static. I\'ve seen function and method_exists, but haven\'t found a way that allows me to call

Answer 1

for all situations… the best usage would be…

if method_exist(…) && is_callable(…)

For testing example:

class Foo {
  public function PublicMethod() {}
  private function PrivateMethod() {}
  public static function PublicStaticMethod() {}
  private static function PrivateStaticMethod() {}
}

$foo = new Foo();

$callbacks = array(
  array($foo, 'PublicMethod'),
  array($foo, 'PrivateMethod'),
  array($foo, 'PublicStaticMethod'),
  array($foo, 'PrivateStaticMethod'),
  array('Foo', 'PublicMethod'),
  array('Foo', 'PrivateMethod'),
  array('Foo', 'PublicStaticMethod'),
  array('Foo', 'PrivateStaticMethod'),
);

foreach ($callbacks as $callback) {
  var_dump($callback);
  var_dump(method_exists($callback[0], $callback[1])); // 0: object / class name, 1: method name
  var_dump(is_callable($callback));
  echo str_repeat('-', 40), "n";
}

Source here