CODEWITHSUNDEEP
phpjquerycodeigniterimage-processingbase64
Daniel White
Daniel White

Reputation: 3377

Codeigniter | Save Base64 image to file

I have created a custom product configurator that saves a canvas element as a base64 encoded image. When I echo the image in the browser as the image src it works fine.

So something like this works:

$base64Image = $_POST['dataUrl'];
echo '<img src="'.$base64Image.'" />';

My problem is that codeigniter wont add this base64 image src to the session, probably because its too big. I have tried some methods that people have used to write an image to the server and they all throw errors. Does anyone know how I can write this base64 string to an image on the server like 'myimage.png' in the images/custom folder?

Any help is appreciated.

Upvotes: 3

Views: 22362

Answers (2)

Janus Troelsen
Janus Troelsen

Reputation: 21300

Use tempnam() to get a unique file name in a directory writable by the script. You can map a session variable "thisUsersTempFile" to that file name.

Or you can store the association somewhere else if it is not temporary. If you need to clean up the tmp files, you would probably need to do that since I don't think you can hook the session destruction. You could poll for existing sessions and delete the tmpfiles associated with the sessions that were destroyed. You could use a cron job for that.

Upvotes: 2

GBD
GBD

Reputation: 15981

You can also use 

$decoded=base64_decode($base64Image);
file_put_contents('newImage.JPG',$decoded);

Reference Link: http://j-query.blogspot.in/2011/02/save-base64-encoded-canvas-image-to-png.html

Upvotes: 16

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