Question

我正在尝试运行两个stmts并将其与php绑定。当我只运行$ stmt并删除所有$ stmt2时，它可以完美运行。我正在尝试将“活动”列更改为零。基本上是尝试搜索和更新用户已上传的所有其他图片，并将其更改为零（这样就不是个人资料图片），只有最新的图片应该处于活动状态（$ active中为1）。

 if (!$mysqli) {
echo "Error: Unable to connect to MySQL." . PHP_EOL;
echo "Debugging errno: " . mysqli_connect_errno() . PHP_EOL;
echo "Debugging error: " . mysqli_connect_error() . PHP_EOL;
echo $db;
exit;
}

try {

if (empty($_FILES['image'])) {
    throw new Exception('Image file is missing');
}

$image = $_FILES['image'];

// check INI error
if ($image['error'] !== 0) {
    if ($image['error'] === 1) 
        throw new Exception('Max upload size exceeded');

    throw new Exception('Image uploading error: INI Error');
}

// check if the file exists
if (!file_exists($image['tmp_name']))
    throw new Exception('Image file is missing in the server');

$maxFileSize = 2 * 10e6; // in bytes
if ($image['size'] > $maxFileSize)
    throw new Exception('Max size limit exceeded'); 

// check if uploaded file is an image
$imageData = getimagesize($image['tmp_name']);
if (!$imageData) 
    throw new Exception('Invalid image');

$mimeType = $imageData['mime'];

// validate mime type
$allowedMimeTypes = ['image/jpeg', 'image/png', 'image/gif'];
if (!in_array($mimeType, $allowedMimeTypes)) 
    throw new Exception('Only JPEG, PNG and GIFs are allowed');

// nice! it's a valid image

// get file extension (ex: jpg, png) not (.jpg)
$fileExtention = strtolower(pathinfo($image['name'] ,PATHINFO_EXTENSION));

// create random name for your image
$fileName = round(microtime(true)) . mt_rand() . '.' . $fileExtention; // anyfilename.jpg

// Create the path starting from DOCUMENT ROOT of your website
$path = '/php/image_upload/images/' . $fileName;

// file path in the computer - where to save it 
$destination = $_SERVER['DOCUMENT_ROOT'] . $path;

if (move_uploaded_file($image['tmp_name'], $destination)) {
    // create the url
    $protocol = stripos($_SERVER['SERVER_PROTOCOL'],'https') === true ? 'https://' : 'http://';
    $domain = $protocol . $_SERVER['SERVER_NAME'];
    $url = $domain . $path;
    $active = 1;

    $mysqli->autocommit(FALSE);
    $stmt2 = $mysqli->prepare('UPDATE image_uploads SET active = ? WHERE user_id = ?');
    $stmt = $mysqli -> prepare('INSERT INTO image_uploads (url, active, user_id) VALUES (?, ?, ?)');
    if (
        $stmt &&
        $stmt2 &&
        $stmt2 -> bind_param('ii', 0, $_SESSION['id']) &&
        $stmt -> bind_param('sii', $url, $_SESSION['id'], $active) &&
        $stmt2 -> execute() &&
        $stmt -> execute()
    ) {
        exit(
            json_encode(
                array(
                    'status' => true,
                    'url' => $url

                )
            )
        );
    } else {
        throw new Exception('Error in saving into the database');
    }

}


 } catch (Exception $e) {

exit(json_encode(
    array (
        'status' => false,
        'error' => $e -> getMessage()
    )
));

}

Answer 1

您可能忘了在这里关闭其他页面

} else 
    throw new Exception('Error in saving into the database');

应该是

} else 
    throw new Exception('Error in saving into the database');
}

更新：

我没有注意到您已经更新了代码。

问题在以下一行：$maxFileSize = 2 * 10e6;

应该为$maxFileSize = 2 * 1024;

用php mysqli-> prepare更新和插入SQL表

1 个答案: