public function test_hooks()
{
add_action('LP_TEST_HOOK', function ($data) {
return strtoupper($data);
});
$this->assertTrue(has_hook('LP_TEST_HOOK'));
$this->assertEqual(do_action('LP_TEST_HOOK', 'abc'), 'ABC');
remove_hook('LP_TEST_HOOK');
$this->assertFalse(has_hook('LP_TEST_HOOK'));
}
function apply_hook($tag, $value)
{
$tag = strtoupper($tag);
if ($hooks = has_hook($tag)) {
ksort($hooks);
$args = func_get_args();
reset($hooks);
do {
foreach ((array) current($hooks) as $hook) {
if (!is_null($hook['function'])) {
$args[1] = $value;
$value = call_user_func_array($hook['function'], array_slice($args, 1, (int) $hook['args_num']));
}
}
} while (next($hooks) !== false);
}
return $value;
}