[eluser]Fabdrol[/eluser]
Hi folks!
I'm using the following methods to resize my image into an thumbnail. Somehow, it doesn't work as inspected. In stead of saving a file, it outputs the original image to the browser..
Can't get really much feedback either, no way to catch error messages or anything..
Code: function _createthumb($img, $w) {
$original = $this->_getimage($img->mimetype, $img->fs_name);
$data['thumbnail'] = uid();
$filename = './uploads/blobs/'.$data['thumbnail'];
$table = $this->config->item('bijlagen');
list($width, $height) = getimagesize($original);
$xscale = $width / $w;
$yscale = $height / $w;
if($yscale > $xscale){
$new_width = round($width * (1 / $yscale));
$new_height = round($height * (1 / $yscale));
} else {
$new_width = round($width * (1 / $xscale));
$new_height = round($height * (1 / $xscale));
}
switch($img->mimetype) {
case 'image/jpeg':
$resized = imagecreatetruecolor($new_width, $new_height);
$temporary = imagecreatefromjpeg($original);
imagecopyresampled($resized, $temporary, 0, 0, 0, 0, $new_width, $new_height, $width, $height);
imagejpeg($resized, $filename, 100);
break;
case 'image/png':
$resized = imagecreatetruecolor($new_width, $new_height);
$temporary = imagecreatefrompng($original);
imagecopyresampled($resized, $temporary, 0, 0, 0, 0, $new_width, $new_height, $width, $height);
imagepng($resized, $filename, 100);
break;
}
$this->db->where('uid', $img->uid);
$this->db->update($table, $data);
return $r;
}
[eluser]Fabdrol[/eluser]
I tried this as well.. but that only seems to work the first time I use it!
Any thoughts?
Code: function _create_thumb($img, $wh) {
$data['thumbnail'] = uid();
$table = $this->config->item('bijlagen');
$config['image_library'] = 'gd2';
$config['source_image'] = './uploads/blobs/'.$img->fs_name;
$config['new_image'] = $data['thumbnail'];
$config['maintain_ratio'] = TRUE;
$config['width'] = $wh;
$config['height'] = $wh;
$this->load->library('image_lib', $config);
if(!$this->image_lib->resize()) {
echo "<pre>";
echo date("H:m:i")." Path: ".$config['source_image']."\n";
echo $this->image_lib->display_errors(date("H:m:i")." ", "\n");
echo "</pre>";
}
$this->db->where('uid', $img->uid);
$this->db->update($table, $data);
$this->_getimage($img->mimetype, $data['thumbnail']);
$this->image_lib->clear();
}
[eluser]Fabdrol[/eluser]
I've found out something:
When resizing fails (or saving of the resized image, i'm not sure) the original image is shown. The code to retrieve the thumbnail Code: $this->_getimage($img->mimetype, $data['thumbnail']);
is not run.
When I run the code again to retrieve the thumbnail, after that, a url to the image is shown, not the thumbnail. That's because there's no thumbnail in the File system.
The code to retrieve the thumbnail:
Code: function _getimage($mime, $fs) {
header("Content-type: ".$mime);
echo file_get_contents(base_url() . 'uploads/blobs/'.$fs);
}
[eluser]Fabdrol[/eluser]
One more thing: all my images are saved as files without filenames.
Is that a big problem?
Example filename:
Code: uploads/blobs/8a96d93d2d69fa509ecfef474f433451
Cheers,
Fabian
[eluser]Fabdrol[/eluser]
strange.. some thumbnails are actually saved.. although not consequently...
strange strange strange!
[eluser]WebsiteDuck[/eluser]
Just wondering, is uid() your own function? Is it similar to PHP's uniqid()?
[eluser]Fabdrol[/eluser]
@bkaxrf
yeah, it's a helper I use to generate even more unique ID's.
Why?
[eluser]Fabdrol[/eluser]
Hi folks, already got it working.
When I tried to do the trick with CI's image lib, I forgot to point to that function, somewhere in the script.
pretty stupid, eh?
Well, thanks anyway.
Oh jeh, @bkaxrf, if u are interested.. my UID helper works like this:
1. Generate an ultra, super, duper, deluxe unique string
2. Salt it with some time() and a bit of my own spit
3. SHA1 the whole package for portability
4. Check a database table if it doesn't exist
5. Store it in a database table
6. Return the UID()
May sound like a bit over the top, but I like my ID pointers to be hard to guess. The store✓functionality is configurable, so in small apps I turn in off. (most of the time, the uid method is quite watertight)
Cheers!
Fabian
[eluser]WebsiteDuck[/eluser]
Nevermind :lol:
[eluser]Fabdrol[/eluser]
Well, it outputs the "large" image. thought I fixed it though...
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