有个无限极分类的数据表我把数据表分类，生成了多维数组进行保存function getkind($id){if(file_exists($_G['cache'].'kindcache.txt')) //分类缓存是否存在$str = unserialize(file_get_contents($_G['cache'].'kindcache.txt'));else$str = $cache->outkindcache(0); // 生成分类缓存$data=$this->getkindcache($id,$str); //查找数组return $data;}function getkindcache($id,$str,$data1=array())//递归函数{global $_G;foreach($str as $k=>$v){if($v['kind'] == $id){$data1[] = $v;}if(is_array($v['child']))$this->getkindcache($id,$v['child'],$data1);}return $data1;}上面的这个递归函数总是返回NULL,不能保存我要返回的数据标红的是我要查找的数据Array ([0] => Array ([uid] => 2[kind] => 0[top] => 2[pagesize] => 15[name] => 新闻[sort] => 1[keywords] =>[description] =>[enable] => 1[html] => 1[outlink] =>[model] => news[modelname] => 新闻模型[template] => news.html[templist] => news_list.html[tempview] => news_view.html[typedir] => http://localhost/2011-4-30/static/2[grade] => 1[kindtype] => 1[child] => Array ([0] => Array ([uid] => 1[kind] => 2[top] => 1[pagesize] => 15[name] => 产品展示[sort] => 0[keywords] =>[description] =>[enable] => 1[html] => 1[outlink] =>[model] => product[modelname] => 产品模型[template] => product.html[templist] => product_list.html[tempview] => product_view.html[typedir] => http://localhost/2011-4-30/static/1[grade] => 1[kindtype] => 1[child] => Array ([0] => Array ([uid] => 15[kind] => 1[top] => 1[pagesize] => 15[name] => 橡胶制品[sort] => 0[keywords] =>[description] =>[enable] => 1[html] => 1[outlink] =>[model] => product[modelname] => 产品模型[template] => product.html[templist] => product_list.html[tempview] => product_view.html[typedir] => http://localhost/2011-4-30/static/1/15/list_1.html[grade] => 1[kindtype] => 0[child] =>)))[1] => Array ([uid] => 3[kind] => 2[top] => 3[pagesize] => 30[name] => 图片展示[sort] => 0[keywords] =>[description] =>[enable] => 1[html] => 1[outlink] =>[model] => images[modelname] => 图片模型[template] => images.html[templist] => images_list.html[tempview] => images_view.html[typedir] => http://localhost/2011-4-30/static/3/list_1.html[grade] => 1[kindtype] => 0[child] => Array ([0] => Array ([uid] => 17[kind] => 3[top] => 3[pagesize] => 15[name] => 测试[sort] => 0[keywords] => 1111[description] => 2222[enable] => 1[html] => 1[outlink] =>[model] => news[modelname] => 新闻模型[template] => news.html[templist] => news_list.html[tempview] => news_view.html[typedir] => http://localhost/2011-4-30/static/3/17/list_1.html[grade] => 0[kindtype] => 0[child] =>)[1] => Array ([uid] => 18[kind] => 3[top] => 3[pagesize] => 15[name] => 测试[sort] => 0[keywords] =>[description] =>[enable] => 1[html] => 1[outlink] =>[model] => news[modelname] => 新闻模型[template] => news.html[templist] => news_list.html[tempview] => news_view.html[typedir] => http://localhost/2011-4-30/static/3/18/list_1.html[grade] => 0[kindtype] => 0[child] =>)[2] => Array ([uid] => 19[kind] => 3[top] => 3[pagesize] => 15[name] => 测试[sort] => 0[keywords] =>[description] =>[enable] => 1[html] => 1[outlink] =>[model] => news[modelname] => 新闻模型[template] => news.html[templist] => news_list.html[tempview] => news_view.html[typedir] => http://localhost/2011-4-30/static/3/19/list_1.html[grade] => 0[kindtype] => 0[child] =>）
))回复讨论(解决方案)[3] => Array ([uid] => 7[kind] => 2[top] => 2[pagesize] => 15[name] => 法国新闻[sort] => 0[keywords] =>[description] =>[enable] => 1[html] => 1[outlink] =>[model] => news[modelname] => 新闻模型[template] => news.html[templist] => news_list.html[tempview] => news_view.html[typedir] => http://localhost/2011-4-30/static/2/7[grade] => 1[kindtype] => 1[child] =>))[4] => Array ([uid] => 8[kind] => 2[top] => 2[pagesize] => 15[name] => 中国新闻[sort] => 0[keywords] =>[description] =>[enable] => 1[html] => 1[outlink] =>[model] => news[modelname] => 新闻模型[template] => news.html[templist] => news_list.html[tempview] => news_view.html[typedir] => http://localhost/2011-4-30/static/2/8/list_1.html[grade] => 1[kindtype] => 0[child] =>)[5] => Array ([uid] => 9[kind] => 2[top] => 2[pagesize] => 15[name] => 俄罗斯新闻[sort] => 0[keywords] =>[description] =>[enable] => 1[html] => 1[outlink] =>[model] => news[modelname] => 新闻模型[template] => news.html[templist] => news_list.html[tempview] => news_view.html[typedir] => http://localhost/2011-4-30/static/2/9/list_1.html[grade] => 1[kindtype] => 0[child] =>)[6] => Array ([uid] => 10[kind] => 2[top] => 2[pagesize] => 15[name] => 英国新闻[sort] => 0[keywords] =>[description] =>[enable] => 1[html] => 1[outlink] =>[model] => news[modelname] => 新闻模型[template] => news.html[templist] => news_list.html[tempview] => news_view.html[typedir] => http://localhost/2011-4-30/static/2/10/list_1.html[grade] => 1[kindtype] => 0[child] =>)))[1] => Array ([uid] => 4[kind] => 0[top] => 4[pagesize] => 15[name] => 信息分类[sort] => 6[keywords] =>[description] =>[enable] => 1[html] => 1[outlink] =>[model] => info[modelname] => 分类模型[template] => info.html[templist] => info_list.html[tempview] => info_view.html[typedir] => http://localhost/2011-4-30/static/4/list_1.html[grade] => 1[kindtype] => 0[child] => Array ([0] => Array ([uid] => 5[kind] => 4[top] => 4[pagesize] => 15[name] => 旅游摄影[sort] => 0[keywords] => 旅游摄影[description] => 旅游摄影[enable] => 1[html] => 1[outlink] =>[model] => info