private static function _get_nested_keys($key)
{
$keys = \Ws\Helper\Arrays::normalize($key, '/');
$last = array_pop($keys);
return [$keys, $last];
}
/**
* 获取回调函数对象
*
* @param mixed $closure 回调函数对象
*
* @return array
*/
public static function getClosure($closure)
{
if (empty($closure)) {
return null;
}
$closureType = null;
if (self::isClosure($closure)) {
$closureType = 'closure';
} else {
if (is_callable($closure)) {
$closureType = 'callable';
} else {
if (is_string($closure)) {
$closure = \Ws\Helper\Arrays::normalize($closure, '@');
// class, method
$class = array_shift($closure);
if (class_exists($class)) {
$method = array_shift($closure);
if (empty($method)) {
$method = 'execute';
}
if (is_callable([$class, $method])) {
$closureType = 'method';
$closure = [$class, $method];
}
}
}
}
}
if (empty($closureType)) {
return null;
}
return ['type' => $closureType, 'closure' => $closure];
}
