gistfile1.php

 <?php defined('SYSPATH') or die('No direct script access.');

class Text extends Kohana_Text {

	public static function extract_emails($string)
	{
		$return = array();
		
		if (Valid::email($string))
		{
			$return[] = $string;
		}
		else
		{
			$exploded = explode(',', $string);
			
			foreach ($exploded as $e)
			{
				$e = trim($e, "\n\t \"'");
				
				if (Valid::email($e))
				{
					$return[] = $e;
				}
			}
		}
		
		return $return;
	}

}