how to show image from url facebook application?

on googling i found this code开发者_StackOverflow社区 facebook.fbml.refreshImgSrc('imgURL')

how to use this code with cakephp..

Stolen from core helper in cookbook

<?php echo $html->image('http://example.com/cake_logo.png', array('alt' => 'CakePHP'))?>

will output

<img src="http://example.com/cake_logo.png" alt="CakePHP" />

You can get more details about this in the cook.I think it should be helpful.