通过节点js上传base64（文件）到php服务器

Question

I currently have a situation where FormData doesn't work for me. I'm using a specific "engine" Adobe CEP which is a little antiquated and the formData causes issues. My solution was to upload a file directly via base64 encoding. From Node JS I do:

let buff = new Buffer(filePath);
let base64data = buff.toString('base64');
console.log(base64data);

The console.log gives me the string:

Li4vLi4vLi4vLi4vLi4vLi4vLi4vVXNlcnMvb21hcmd1em1hbi8vRGVza3RvcC9Zb28vYWkyaHRtbC1vdXRwdXQvaG9tZS1wcm8tQXJ0Ym9hcmRfMS5qcGc=

  axios.post(API_ENDPOINT, base64data)
  .then(res => console.log(res))

From here I upload to a php server via axios. The server receives it and I do:

<?php
$data = json_decode( file_get_contents('php://input') );
file_put_contents('testmeimg.jpg', base64_decode($data));
echo 'completed';
?>

another attempt

$data = file_get_contents('php://input');
file_put_contents('testmeimg.jpg', base64_decode($data));
var_dump($data);

"string(120) "Li4vLi4vLi4vLi4vLi4vLi4vLi4vVXNlcnMvb21hcmd1em1hbi8vRGVza3RvcC9Zb28vYWkyaHRtbC1vdXRwdXQvaG9tZS1wcm8tQXJ0Ym9hcmRfMS5qcGc="
"

The file correctly gets saved to my server but it's damaged and unreadable. It also appears with zero bytes. Any idea what I'm doing wrong? or how I should handle this b64?

Answer 1

Thanks to the great help by @rickdenhaan aka the man. I changed my node buffer code to:

   let buff = new Buffer(fs.readFileSync(filePath));
    let base64data = buff.toString('base64');

Previously I wasn't sending the file buffer only the path as a buffer.

Then on the php side this worked:

$data = file_get_contents('php://input');
file_put_contents('testmeimg.jpg', base64_decode($data));