Saving a file in GD

[audiopro]

Workng with GD library but have hit a wall. I have a script which resizes an image and then prints it to a browser with.

ImageJPEG($thumb);

That works fine but I want to save a copy of that image. Example scripts show the following code but I cannot get it to save the file.

imagejpeg($thumb, 'zytr.jpg', 100) ;

I have set the permissions to 'wide open' but no joy - can anyone see what I am missing?

Keith

http://www.studiosoft.co.uk

 

[feherke]

Hi

I have set the permissions to 'wide open' but no joy

Could you give us some details on this, please ?

Feherke.

http://rootshell.be/~feherke/

 

[audiopro]

I was not sure if it was a folder permissions issue so I set them to 777 as a test but the script still does not save a copy of the file.
Overview is - user uploads an image from their computer. If the image is over a certain size the picture is resized and displayed. Rather than have to resize the picture each time it is viewed, I figured it would be better to save the smaller picture at the time of uploading. So far my attempts to save the file have failed.

Keith

http://www.studiosoft.co.uk

 

[feherke]

Hi

Interesting. Let us try some alternatives together with some debugging.

[url=http://php.net/ini_set/]ini_set[/url]('[url=http://php.net/manual/en/errorfunc.configuration.php#ini.display-errors]display_errors[/url]','on');
[url=http://php.net/error_reporting/]error_reporting[/url](E_ALL);

[url=http://php.net/file_put_contents/]file_put_contents[/url]('zytr.txt','WORKS');

file_put_contents('zytr.jpg',imagejpeg($thumb,null,100));

Tell us what happens.

Feherke.

http://rootshell.be/~feherke/

 

[audiopro]

After further testing I have found it to be a permissions issue after all. I was also trying to over write an existing file which the script still had an open file handle for. I will have to upload the file to a different directory, process it and then move it to the working directory.

Thanks for your help.

Keith

http://www.studiosoft.co.uk

 

[Olavxxx]

Hi, just use the:

if (is_file($file)) {
  // code here to output the file (header)
  }
else {
  // code here for creating the thumb
  }

Also, if you have an upload form, I usually make a function that loops while is_file($filename), so a user cant overwrite another users pictures.
Inside the loop, I append md5(time()) to the file, like so:

while(is_file($file)) {
  $file = md5(time()) . $file;
  }
// after the loop, you put the code for moving the file from its TMP location, to the new file location and the new, unique filename.

I store the files in file-structure, but I store title and such in mysql. Then I use htaccess to retrieve and put the file in the header, for the browser to peak at it :-)

This means I can optimize all my images as I wish, with a "fake" filename on the fly, I can also on the fly watermark, etc. I always use the if_is_file a lot, so I dont regenerate thumbs and such, to minimize unwanted stress on the cpu/ram (shared hosting).

Olav Alexander Mjelde

 

[Olavxxx]

remember to also check that it in deed is a picture, checking the extension alone, is not enough.

I usually get info like pixels in width, if that function fails, I would chmod the uploaded file to 0400 or something, or maybe just unlink() it at once.

Olav Alexander Mjelde