PHP mysql运算循环出来的字段

php mysql运算循环出来的字段…

<?php
function _init_navshkshadowss($arr, $db) {
	/**
	 * 板块回复排行总条数
	 * Enter description here .
	 * ..
	 * 
	 * @var unknown_type
	 */
	$sqlpostssmax = "SELECT * FROM `blg_forum_forum` WHERE `type` = 'forum' AND `status` = '1' AND `fup` != '0' order by posts DESC limit 10";
	$query = $db->query ( $sqlpostssmax );
	while ( $rs = $db->fetch_array ( $query ) ) {
		$numpost = $rs [posts] + $numpost;
	}
	$sqlpost = "SELECT * FROM `blg_forum_forum` WHERE `type` = 'forum' AND `status` = '1' AND `fup` != '0' order by posts DESC limit 10";
	$query = $db->query ( $sqlpost );
	$i = 0;
	while ( $rs = $db->fetch_array ( $query ) ) {
		$i ++;
		$rs ["i"] = $i;
		$rs ["numpost"] = $numpost;
		$u [] = $rs;
	}
	$this->var ['setting'] ['forumn'] = $u;

}
?>