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分享$map['id'] = I('get.id');
$map['cid'] = i('get.cid');
$m->where($map)->find();SELECT `id`,`title`,`pic` FROM `news` WHERE `id` = null AND `cid` = null LIMIT 0,12$map['id'] = I('get.id');
$map['cid'] = i('get.cid');
$map = array_diff($map, array('')); //过滤掉空元素
$m->where($map)->find();