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HomeBackend DevelopmentPHP TutorialGetOne? 有时候失效解决方法

GetOne? 有时候失效

PHP code
<!--Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/-->function GetMaxLevel($model)    {         $sql = "select max(slevel) from boxfile                 where model = '$model'";             $record_nums = $this->db->GetOne($sql);           //print_r($record_nums);        return $record_nums;         }

为什么我这个函数偶尔会失效呢 刚刚还只返回最大 后来就不返回最大了 我感觉我没改什么东西啊。。

------解决方案--------------------
那你有没有看失效和有效时调用的方式,参数传的是否一样呢

------解决方案--------------------
你值自己封装了的吧,这么看,很难看出问题
你要看看getOne的具体写法了,是返回了一个资源呢,还是一个int,还是其他的什么类型
------解决方案--------------------
自己拙句输出看看
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