# Importing and instantiating, whats the difference?

**URL:** <https://forum.kirupa.com/t/importing-and-instantiating-whats-the-difference/255130>\
**Category:** flash\
**Created:** [March 19, 2008, 12:19pm UTC](https://forum.kirupa.com/t/importing-and-instantiating-whats-the-difference/255130 "2008-03-19T12:19:36Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![daidai](https://yyz1.discourse-cdn.com/flex011/user_avatar/forum.kirupa.com/daidai/32/3087_2.png) [@daidai](https://forum.kirupa.com/u/daidai)\
**Post date:** [March 19, 2008, 12:19pm UTC](https://forum.kirupa.com/t/importing-and-instantiating-whats-the-difference/255130/1 "2008-03-19T12:19:36Z")

</div>

how important is importing, like

```php
import someClass;

```

because it seems that if you want to use the class like

```php
var _someClass = new someClass();

```

it will work without importing it. is it just for efficiency purposes? should I import all the classed that I use?  
dai2