Get class hierarchy Returns the complete class hierarchy of an object or a class name. Can be used as method or function.

new_gist_file.php

public function getClassHierarchy($obj){
    if(is_object($obj)){
        $class = get_class($obj);
    }
    elseif(!class_exists($obj)){
        throw new InvalidArgumentException("class $obj is not defined" );
    }
    $hierarchy = array();
    while($class){
        $hierarchy[] = $class;
        $class = get_parent_class($class);
    }
    return $hierarchy;
}