【问题标题】:sql error while trying to store the image to database(UPDATED)尝试将图像存储到数据库时出现 sql 错误(已更新)
【发布时间】:2023-03-10 10:43:01
【问题描述】:

UPDATED: 正如评论部分所建议的,我已经更新了我的代码并现在使用 PDO。我仍然有同样的错误。 我正在尝试将多个图像存储到数据库(phpmyadmin)。当我尝试上传时出现错误Error: SQLSTATE[42S22]: Column not found: 1054 Unknown column 'file.png' in 'field list'

我的数据库:

我有一个名为 image_upload 的数据库,其中有一个名为 car_detailss 的表,它有一个 id (int11)、car_name(varchar 255) 和 imageOfcar(longblob)。

这是我的图片详细信息:

Array
(
    [0] => Array
        (
            [name] => file.png
            [type] => image/png
            [tmp_name] => /opt/lampp/temp/phpJYyrQn
            [error] => 0
            [size] => 77776
        )

    [1] => Array
        (
            [name] => files.png
            [type] => image/png
            [tmp_name] => /opt/lampp/temp/phpXOLvzL
            [error] => 0
            [size] => 84710
        )

)

正如评论部分所建议的,我现在正在使用 PDO 这是我的代码:(已更新)

    <!doctype html>
<html>
    <head>
        <title>Test</title>
    </head>
    <body>
    <form   method="post" enctype="multipart/form-data">
           <input type="file" name="userfile[]" multiple="" /> 
           <input type="submit" name="submit" value="upload" />
    </form>

    <?php
      $servername="localhost";
      $username="root";
      $password = "";
      $dbname="image_upload";
      try {
      $conn = new PDO("mysql:host=$servername;dbname=$dbname",$username, $password);
      $conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

      // begin the transaction
      $conn->beginTransaction();


      
      

$phpFileUploadErrors = array(
    0 => "There is no error, the file uploaded with success",
    1 => "The uploaded file exceeds the upload_max_filesize directive in php.ini",

    2 => "The upload file exceeds the MAX_FILE_SIZE directive that was specified in the HTML form",

    3 => "The upload file was only partially uploaded",


    4 => "No file was uploaded",

    6 => "Missing a temporary folder",
    7 => "Failed to write file to disk.",
    8 => "A php extension stopped the file upload"
);



    if(isset($_FILES['userfile'])) {
      
       $file_array = reArrayFiles($_FILES['userfile']);
       pre_r($file_array);
        for($i=0;$i<count($file_array);$i++) {

    $carname = $file_array[$i]["tmp_name"];
    $tablename = "car_detailss";

            $imagename = $file_array[$i]["name"];
            pre_r($carname);
            pre_r($imagename);
            $conn->exec("INSERT INTO `car_detailss`(`car_name`, `imageOfcar`) VALUES ( $carname,$imagename)");
          
          
          
            }
           
         
         

        }
        $conn->commit();
        echo "new records created succesfully";
    } catch(PDOException $e) {
        // roll back the transaction if something failed
        $conn->rollback();
        echo "Error: " . $e->getMessage();
      }
      
      $conn = null;
       
    

      
 
    

 function reArrayFiles($file_post) {
     $file_ary = array();
     $file_count = count($file_post['name']);
     $file_keys = array_keys($file_post);

     for ($i = 0; $i < $file_count; $i++){
     foreach($file_keys as $key) {
         $file_ary[$i][$key] = $file_post[$key][$i];
     
     }
 }
 return $file_ary;
}

    function pre_r($array) {
        echo '<pre>';
        print_r($array);
        echo '</pre>';
    }

    
    ?>
    
    </body>
</html>

如何修复我提到的(在顶部)显示的错误?

【问题讨论】:

  • 您没有发布相应的查询 INSERT INTO car_detailss.... 。但是我希望你不要在你的生产系统中使用 roor access(没有密码)
  • @B001ᛦ 抱歉,我在代码中编辑了一些内容,忘记在此处发布之前将其更改回来。我再次编辑了代码。现在我正在使用没有密码(只是为了练习)当我在现实生活中的某个地方实际使用代码时,我会添加密码。
  • multi_query 与您的 SQL 注入问题是要求一个大问题。修复 SQL 注入也将解决当前问题。
  • 这能回答你的问题吗? How can I prevent SQL injection in PHP?
  • ... 或 stackoverflow.com/questions/11321491/… 的重复,但这只会将问题推到更远的地方。

标签: php sql database upload


【解决方案1】:

正如评论部分所建议的那样。我首先将代码更改为 PDO,而不是在没有任何反引号或“”的情况下插入数据库,而是按照评论部分中的建议,在将图像插入数据库时​​添加了反引号和“”。

$conn-&gt;exec( "INSERT INTO car_detailss (car_name, imageOfcar) VALUES ('$carname', '$imagename')");

现在我可以将图像插入我的数据库了。我也在这里更新了我的代码。

我的代码:

<!doctype html>
<html>
    <head>
        <title>Test</title>
    </head>
    <body>
    <form   method="post" enctype="multipart/form-data">
           <input type="file" name="userfile[]" multiple="" /> 
           <input type="submit" name="submit" value="upload" />
    </form>

    <?php
      $servername="localhost";
      $username="root";
      $password = "";
      $dbname="image_upload";
      try {
      $conn = new PDO("mysql:host=$servername;dbname=$dbname",$username, $password);
      $conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

      // begin the transaction
      $conn->beginTransaction();


      
      

$phpFileUploadErrors = array(
    0 => "There is no error, the file uploaded with success",
    1 => "The uploaded file exceeds the upload_max_filesize directive in php.ini",

    2 => "The upload file exceeds the MAX_FILE_SIZE directive that was specified in the HTML form",

    3 => "The upload file was only partially uploaded",


    4 => "No file was uploaded",

    6 => "Missing a temporary folder",
    7 => "Failed to write file to disk.",
    8 => "A php extension stopped the file upload"
);



    if(isset($_FILES['userfile'])) {
      
       $file_array = reArrayFiles($_FILES['userfile']);
       pre_r($file_array);
        for($i=0;$i<count($file_array);$i++) {

    $carname = $file_array[$i]["size"];
    $tablename = "car_detailss";

            $imagename = $file_array[$i]["name"];
           
            $conn->exec( "INSERT INTO `car_detailss` (`car_name`, `imageOfcar`) VALUES ('$carname', '$imagename')");

          
          
          
            }
           
         
         

        }
        $conn->commit();
        echo "new records created succesfully";
    } catch(PDOException $e) {
        // roll back the transaction if something failed
        $conn->rollback();
        echo "Error: " . $e->getMessage();
      }
      
      $conn = null;
       
    

      
 
    

 function reArrayFiles($file_post) {
     $file_ary = array();
     $file_count = count($file_post['name']);
     $file_keys = array_keys($file_post);

     for ($i = 0; $i < $file_count; $i++){
     foreach($file_keys as $key) {
         $file_ary[$i][$key] = $file_post[$key][$i];
     
     }
 }
 return $file_ary;
}

    function pre_r($array) {
        echo '<pre>';
        print_r($array);
        echo '</pre>';
    }

    
    ?>
    
    </body>
</html>

【讨论】:

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