|
|
Posted by Erwin Moller on 09/05/07 15:14
xx75vulcan wrote:
> Hi,
>
> I've got a PHP Upload Form that works great, unless that is, the image
> your uploading has been modified through a photo editing software.
>
> Example: if I upload the image straight from a camera or other, it
> uploads fine. However, If I want to rotate the image, or resize it
> with photoshop or simmilar, making sure to save it again as a jpg, the
> PHP upload won't upload the image.
>
> It's like editing the image somehow changes it's mime type or
> something?!
Hi Vulcan,
Maybe.
> Any ideas?
I ALWAYS start debugging such issues with:
echo "<pre>";
print_r($_FILES);
echo "</pre>";
exit;
Then compare the output of your uneditted and editted version.
Do you see any differences?
That will probably give you a hint.
And do NOT rely too much on mimetype.
from php.net:
$_FILES['userfile']['type']
The mime type of the file, if the browser provided this
information. An example would be "image/gif". This mime type is however
not checked on the PHP side and therefore don't take its value for granted.
Hope that helps.
Regards,
Erwin Moller
> Here's my upload script:
>
> <?php
> if($_POST["upload"]) //Check to see if submit was clicked
> {
> // Get the details of "imagefile"
> $filename = $_FILES['imagefile']['name'];
> $temporary_name = $_FILES['imagefile']['tmp_name'];
> $mimetype = $_FILES['imagefile']['type'];
> $filesize = $_FILES['imagefile']['size'];
>
> //Open the image using the imagecreatefrom..() command based on the
> MIME type.
> switch($mimetype) {
> case "image/jpg":
> case "image/jpeg":
> case "image/pjpeg":
> $i = imagecreatefromjpeg($temporary_name);
> break;
> case "image/gif":
> $i = imagecreatefromgif($temporary_name);
> break;
> case "image/png":
> $i = imagecreatefrompng($temporary_name);
> break;
> }
>
> //Delete the uploaded file
> unlink($temporary_name);
>
> //Specify the size of the thumbnail
> $dest_x = 350;
> $dest_y = 350;
>
> //Is the original bigger than the thumbnail dimensions?
> if (imagesx($i) > $dest_x or imagesy($i) > $dest_y) {
> //Is the width of the original bigger than the height?
> if (imagesx($i) >= imagesy($i)) {
> $thumb_x = $dest_x;
> $thumb_y = imagesy($i)*($dest_x/imagesx($i));
> } else {
> $thumb_x = imagesx($i)*($dest_y/imagesy($i));
> $thumb_y = $dest_y;
> }
> } else {
> //Using the original dimensions
> $thumb_x = imagesx($i);
> $thumb_y = imagesy($i);
> }
>
> //Generate a new image at the size of the thumbnail
> $thumb = imagecreatetruecolor($thumb_x,$thumb_y);
>
> //Copy the original image data to it using resampling
> imagecopyresampled($thumb, $i ,0, 0, 0, 0, $thumb_x, $thumb_y,
> imagesx($i), imagesy($i));
>
> //Save the thumbnail
> imagejpeg($thumb, "../images/$filename", 80);
>
> //Display FileName
> Print "Value for Image field: $filename";
> $added =true;
> }
> ?>
>
> <html>
> <form action="upload.php" method="POST" enctype="multipart/
> form-data">
> <input type="hidden" name="MAX_FILE_SIZE" value="200000">
> <input type="file" name="imagefile">
> <input type="submit" name="upload" value="Upload Image">
> </form>
> </html>
>
Navigation:
[Reply to this message]
|