PHP函数中的奇怪过滤结果

Posted 2023-03-16

【中文标题】PHP函数中的奇怪过滤结果

【英文标题】：Weird filter result in PHP function

【发布时间】：2017-02-08 02:21:44

【问题描述】：

我正在使用以下 php 函数来过滤 mysql 表：

  public function buscarModelos($searchWord)
    
        $returnValue = array();

        $sql = "select * from tb_modelos  where 1";

        if(!empty($searchWord))
        
            $sql .= " and ( agencia_modelo LIKE ?  )";
              $sql .= " ORDER BY nombre_modelo";

        

        $statement = $this->conn->prepare($sql);

        if (!$statement)
            throw new Exception($statement->error);

        if(!empty($searchWord))
        
          $searchWord = '%' ;
          $statement->bind_param("s",  $searchWord );
        

        $statement->execute();

        $result = $statement->get_result();

         while ($myrow = $result->fetch_assoc()) 
         
           $returnValue[] = $myrow;
         

        return $returnValue;
     

我需要过滤 $searchWord，在本例中为 $searchWord = TOU656。

我的问题是查询没有按我的意愿过滤。

如您所见，有一行 (#34) 将 TOU658 作为键 agencia_modelo 的值

我正在从 ios 应用程序调用 PHP 函数，我只想获取具有 TOU656 作为键 agencia_model 的值的行，但第 34 行也作为过滤结果的一部分接收。

编辑

string(87) "select * from tb_modelos where 1 and (agencia_modelo LIKE ?) ORDER BY nombre_modelo" string(1) "%" "friends":["id_modelo":34,"nombre_modelo":"CHRYSLER 200","agencia_modelo":"TOU658","id_modelo":2,"nombre_modelo":"CHRYSLER 300","agencia_modelo":"TOU656","id_modelo":7,"nombre_modelo":"CHRYSLER NEON","agencia_modelo":"TOU656","id_modelo":16,"nombre_modelo":"CHRYSLER PACIFICA","agencia_modelo":"TOU656","id_modelo":15,"nombre_modelo":"CHRYSLER城镇和国家","agencia_modelo":"TOU656","id_modelo":6,"nombre_modelo":"CHRYSLER VISION","agencia_modelo":"TOU656","id_modelo":4,"nombre_modelo": "道奇 ATOS","agencia_modelo":"TOU656","id_modelo":5,"nombre_modelo":"DODGE ATTITUDE","agencia_modelo":"TOU656","id_modelo":32,"nombre_modelo": "道奇复仇者","agencia_modelo":"TOU656","id_modelo":13,"nombre_modelo":"DODGE DURANGO","agencia_modelo":"TOU656","id_modelo":14,"nombre_modelo": "道奇大篷车","agencia_modelo":"TOU656","id_modelo":8,"nombre_modelo":"做DGE 旅程","agencia_modelo":"TOU656","id_modelo":25,"nombre_modelo":"FIAT 500","agencia_modelo":"TOU656","id_modelo":26,"nombre_modelo":"菲亚特 500 L","agencia_modelo":"TOU656","id_modelo":27,"nombre_modelo":"FIAT 500 X","agencia_modelo":"TOU656","id_modelo":29,"nombre_modelo" :"FIAT DUCATO","agencia_modelo":"TOU656","id_modelo":21,"nombre_modelo":"FIAT MOBI","agencia_modelo":"TOU656","id_modelo":23,"nombre_modelo" :"FIAT PALIO","agencia_modelo":"TOU656","id_modelo":24,"nombre_modelo":"FIAT PALIO ADVENTURE","agencia_modelo":"TOU656","id_modelo":22,"nombre_modelo ":"FIAT UNO","agencia_modelo":"TOU656","id_modelo":11,"nombre_modelo":"JEEP CHEROKEE","agencia_modelo":"TOU656","id_modelo":10,"nombre_modelo ":"JEEP 指南针","agencia_modelo":"TOU656","id_modelo":12,"nombre_modelo":"JEEP 大切诺基","agencia_modelo":"TOU656","id_modelo":9," nombre_modelo":"JEEP PATRIOT","agencia_modelo":"TOU656","id_modelo":31,"nombre_modelo":"JEEP RENEGADE","agencia_modelo":"TOU656", "id_modelo":30,"nombre_modelo":"JEEP WRANGLER","agencia_modelo":"TOU656","id_modelo":18,"nombre_modelo":"RAM 700","agencia_modelo":"TOU656", "id_modelo":17,"nombre_modelo":"RAM PICKUP","agencia_modelo":"TOU656","id_modelo":19,"nombre_modelo":"RAM PROMASTER","agencia_modelo":"TOU656", "id_modelo":20,"nombre_modelo":"RAM PROMASTER RAPID","agencia_modelo":"TOU656"]

【问题讨论】：

看起来您正在将$searchWord 更改为%，这将匹配任何内容。 $searchWord = '%' ; 如果你删除它，它会起作用吗？

@drew010，谢谢，我试试

如果参数$searchWord为空，则查询结果不过滤。调用函数时确保$searchWord不为空？

@drew010，删除那行代码也不起作用

@CalosKao，是的，我敢肯定，如果 PHP 文件没有价值，应用程序不会调用它

【参考方案1】：

如果参数$searchWord不为空，设置值'%'？

如果agencia_modelo LIKE '%'，查询结果不是按agencia_modelo列过滤的。

if(!empty($searchWord))

    $searchWord = '%' ; // <--- Here
    $statement->bind_param("s",  $searchWord );

【讨论】：

现在如你所说，变化在哪里？

@mvasco 尝试删除$searchWord = '%' ;?