使用 PHP 脚本将上传的图像转换为 PNG

发布于 2024-11-07 06:51:15 字数 917 浏览 1 评论 0原文

我在 Flash 中制作了一个上传按钮，链接到 PHP 脚本，我想知道是否有任何方法可以在用户上传图像时将所有图像转换为 PNG？这是我到目前为止所拥有的，但它似乎对我不起作用，有人能指出我正确的方向吗？

<?php
    if (move_uploaded_file($_FILES['Filedata']['tmp_name'], 
          "Parts/userdata/" . $_FILES['Filedata']['name']))
    {
        switch ($_FILES['Filedata']['type']) {
            case ".jpg": case ".jpeg":
                $image = imagecreatefromjpeg($_FILES['Filedata']['name']);
                imagepng($image, $_FILES['Filedata'] . 'png');
                imagedestroy($image);
                break;
            case "gif":
                $image = imagecreatefromgif($_FILES['Filedata']['name']);
                imagepng($image, $_FILES['Filedata'] . 'png');
                imagedestroy($image);
                break;
            default:
               echo "PNG Given";
        }
        echo "OK";
    }
    else
    {
         echo "ERROR";
    }
?>

原文

I've got an upload button I've made in Flash that links to a PHP script and I was wondering if there was any way I could convert all the images to PNGs as the user uploads them? This is what I have so far, but it doesn't seem to be working for me, can anyone point me in the right direction?

<?php
    if (move_uploaded_file($_FILES['Filedata']['tmp_name'], 
          "Parts/userdata/" . $_FILES['Filedata']['name']))
    {
        switch ($_FILES['Filedata']['type']) {
            case ".jpg": case ".jpeg":
                $image = imagecreatefromjpeg($_FILES['Filedata']['name']);
                imagepng($image, $_FILES['Filedata'] . 'png');
                imagedestroy($image);
                break;
            case "gif":
                $image = imagecreatefromgif($_FILES['Filedata']['name']);
                imagepng($image, $_FILES['Filedata'] . 'png');
                imagedestroy($image);
                break;
            default:
               echo "PNG Given";
        }
        echo "OK";
    }
    else
    {
         echo "ERROR";
    }
?>

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甜｀诱少女 2024-11-14 06:51:15

看看我的一些代码，我认为

imagepng($image, $_FILES['Filedata'] . 'png');

应该阅读

imagepng($image, $_FILES['Filedata']['name'] . 'png');

或类似的内容。您可能想使用 basename 或类似的内容删除扩展。（http://php.net/manual/en/function.basename.php）

Looking at some of my code, I think that

imagepng($image, $_FILES['Filedata'] . 'png');

should read

imagepng($image, $_FILES['Filedata']['name'] . 'png');

Or something similar. You probably want to remove the extension using basename or something similar. (http://php.net/manual/en/function.basename.php)

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