Question

我正在尝试制作一个上传功能，为上传到内存中的每个文件添加水印，然后将文件保存到特定文件夹。但是，我无法使代码中的水印部分工作。我确信上传功能在没有添加水印代码的情况下工作。我认为错误必须是水印代码将临时文件“传输”到将文件移动到硬盘驱动器的代码。我该如何解决这个问题？

代码如下：

foreach($_FILES['files']['tmp_name'] as $key => $tmp_name ){

            $file_name = $_FILES['files']['name'][$key];
            $file_size =$_FILES['files']['size'][$key];
            $file_tmp =$_FILES['files']['tmp_name'][$key];
            //$file_type=$_FILES['files']['type'][$key];    

            //if($file_size > 2097152){

                //$errors[]='File size must be less than 2 MB';
            //}
            // echo '<img src="../images/watermark.gif">';

            $q = "INSERT INTO media (file_name, album_id, file_size) VALUES ('$file_name','$album_id', '$file_size')";

            $r = mysqli_query ($dbc, $q);

            $desired_dir = '../../customers/' . $customerFolder . '/';

            // load the watermark and the photo
            $watermark = imagecreatefromgif('../images/watermark.gif');
            $photo = imagecreatefromjpeg($file_tmp);

            // center watermark on the photo
            $wx = imagesx($photo)/2 - imagesx($watermark)/2;
            $wy = imagesy($photo)/2 - imagesy($watermark)/2;

            imagecopy($photo, $watermark, $wx, $wy, 0, 0, imagesx($watermark), imagesy($watermark));

            if(empty($errors)==true){

                    move_uploaded_file($photo,"$desired_dir".$file_name);

                //mysql_query($q);  

            }else{
                print_r($errors);
            }
        }

Answer 1

我提出了以下解决方案：

// Load the stamp and the photo to apply the watermark to
$stamp = imagecreatefromgif('../images/watermark.gif');

$marge_right = 10;
$marge_bottom = 10;
$sx = imagesx($stamp);
$sy = imagesy($stamp);

if(isset($_FILES['files'])){

        $errors= array();

        foreach($_FILES['files']['tmp_name'] as $key => $tmp_name ){

            $file_name = $_FILES['files']['name'][$key];
            $file_size =$_FILES['files']['size'][$key];
            $file_tmp =$_FILES['files']['tmp_name'][$key];
            $file_type=$_FILES['files']['type'][$key];  

            //if($file_size > 2097152){

                //$errors[]='File size must be less than 2 MB';
            //}
            // echo '<img src="../images/watermark.gif">';

            $q = "INSERT INTO media (file_name, album_id, file_size) VALUES ('$file_name','$album_id', '$file_size')";

            $r = mysqli_query ($dbc, $q);

            $desired_dir = '../../customers/' . $customerFolder . '/';

            $im = imagecreatefromjpeg($file_tmp);

            imagecopymerge($im, $stamp, imagesx($im) - $sx - $marge_right, imagesy($im) - $sy - $marge_bottom, 0, 0, imagesx($stamp), imagesy($stamp), 50);

            $newPath = "$desired_dir".$file_name;

            imagepng($im, $newPath);

            if(empty($errors)==true){

                    move_uploaded_file($newPath,"$desired_dir".$file_name);
                    imagedestroy($im);
                //mysql_query($q);  

            }else{
                print_r($errors);
            }
        }

        if(empty($error)){
            return 'ok';

        }else {
            return 'Kunne ikke uploade!';
        }
    }

Answer 2

您正在尝试将move_uploaded_file与resource变量一起使用。

move_uploaded_file接受一个字符串，该字符串是临时文件的绝对路径。

因为您已经将临时文件读入资源，所以您只需将资源写入磁盘：

imagejpeg($photo,$desired_dir.$file_name);

临时文件会自动清理。

在上传过程中向文件添加水印

2 个答案: