Valid::at_least()

bla.php

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

class Model_Bla extends ORM {
 
    public function rules()
    {
        return array(
            'phone_one' => array(
                array('at_least', array($this, 1, array('phone_one', 'phone_two', 'phone_three'))),
            ),
            'phone_two' => array(
                array('at_least', array($this, 1, array('phone_one', 'phone_two', 'phone_three'))),
            ),
            'phone_three' => array(
                array('at_least', array($this, 1, array('phone_one', 'phone_two', 'phone_three'))),
            ),
        );
    }
}

valid.php

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

class Valid exetends Kohana_Valid {
	/**
	 * Checks that at least $needed of $fields are not_empty
	 *
	 * @param   array    array of values
	 * @param   integer  Number of fields required
	 * @param   array    Field names to check.
	 * @return  boolean
	 */
	public static function at_least($array, $needed = 1, $fields)
	{
		$found = 0;

		foreach ($fields as $field)
		{
			if (isset($array[$field]) AND Valid::not_empty($array[$field]))
			{
				$found++;
			}
		}

		return ($found >= $needed);
	}

} // End Valid