I have a base64 encoded png, how do I write the image to a file in PHP?

Question

What's the proper way in PHP to create an image file (PNG), when I have the base64 encoding?

I've been playing around with:

file_put_contents('/tmp/'. $_REQUEST['id'].'.png', $_REQUEST['data']);

do I need to decode? should I be using the gd library?

question from:https://stackoverflow.com/questions/1532993/i-have-a-base64-encoded-png-how-do-i-write-the-image-to-a-file-in-php

Answer 1

You need to use base64_decode(). AND. Sometimes it is not sufficient. Here is all code that you need:

$img = $_POST['data'];
$img = str_replace('data:image/png;base64,', '', $img);
$img = str_replace(' ', '+', $img);
$fileData = base64_decode($img);
//saving
$fileName = 'photo.png';
file_put_contents($fileName, $fileData);

P.S. I used this code to get PNG image from html canvas.