How to save base64 string as image server-side

Question

I want to save a base64 string as an image (.png or .jpg) on my server.

The string I get looks like this: "data:image/jpeg;base64,/9j/4AAQSkZJRgABAQAAAQA[...]"

I tried this:

$data = $_POST['form_new_data'];
        list($type, $data) = explode(';', $data);
        list(, $data)      = explode(',', $data);
        $data = base64_decode($data);
        file_put_contents("/userImgs/pic.jpg",$data);

but it is not working (maybe because the base64 string is a jpeg?).. Please help..

georoot · Accepted Answer · 2015-09-07 18:52:50Z

7

try this

$data = $_POST['form_new_data'];
file_put_contents('img.jpg', base64_decode(preg_replace('#^data:image/\w+;base64,#i', '', $data)));

edited Sep 7, 2015 at 18:52

answered Sep 7, 2015 at 18:51

georoot

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4 Comments

bwoebi Over a year ago

you forgot stripping the prefix ;-P

georoot Over a year ago

realized after posting it. It is fine now rt?

nameless Over a year ago

thank you, works, but can you tell me, why mine is not working? I used the code from the accepted answer of this thread: stackoverflow.com/questions/11511511/… @georoot

georoot Over a year ago

@user3375021 to be frank i am not sure why explode is being used at all. I would say try to print $data in your script just before you store it to a file and compare it with the output of preg_replace in my script

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