尝试将图像存储到数据库时发生sql错误(已更新)

icomxhvb  于 2021-07-24  发布在  Java
关注(0)|答案(1)|浏览(391)

UPDATED: 正如在评论部分所建议的,我已经更新了我的代码并使用了pdo。我还是有同样的错误。我正在尝试将多个图像存储到数据库(phpmyadmin)。当我试图上传它给了一个错误 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\u upload的数据库,里面有一个名为car\u details的表,其中有一个id(int11)、car\u name(varchar 255)和imageofcar(longblob)。
这是我的图像细节:

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:(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>

如何修复我提到的显示在顶部的错误?

jm2pwxwz

jm2pwxwz1#

正如评论部分所建议的。我首先将代码更改为pdo,并没有在没有任何反勾号或“”的情况下插入数据库,而是按照注解部分的建议,在将图像插入数据库时添加了反勾号和“”。 $conn->exec( "INSERT INTO 车辆详细信息 ( 车辆名称 , 汽车影像 ) VALUES ('$carname', '$imagename')"); 现在我可以将图像插入数据库。我也更新了我的代码。
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>

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