CUserOptions::DeleteOption

static function DeleteOption($category, $name, $bCommon = false, $user_id = false)
{
	global $DB, $USER, $CACHE_MANAGER;

	if ($user_id === false && $USER instanceof CUser)
	{
		$user_id = $USER->GetID();
	}

	$user_id = intval($user_id);
	$strSql = "
		DELETE FROM b_user_option
		WHERE ".($bCommon ? "USER_ID=0 AND COMMON='Y' " : "USER_ID=".$user_id)."
		AND CATEGORY='".$DB->ForSql($category, 50)."'
		AND NAME='".$DB->ForSql($name, 255)."'
	";
	if ($DB->Query($strSql, false, "File: ".__FILE__."
Line: ".__LINE__))
	{
		if($bCommon)
		{
			$CACHE_MANAGER->cleanDir("user_option");
			self::$cache = array();
		}
		else
		{
			$CACHE_MANAGER->clean("user_option:".$user_id.":".$category, "user_option");
			unset(self::$cache[$user_id][$category]);
		}
		return true;
	}
	return false;
}