在nodejs中进行Base64编码并在php中进行解码是不同的？

Question

I want to post en file from NodeJs to PHP server.

To do this :

0 - I read a file (a Power Point file)

1 - I encode the file-content in base64

2 - I post the file to the PHP

3 - I decode the file content

4 - I save the file

But when I open the file after the step 4, the file is broken. Anyone say why the decode isn't working ?

nodejs code :

fs.readFile(FilePath, 'utf8', function(err, data) {
                if (err) throw err;
                request.post(
                    callback_url,
                    { json: {
                        'document_id': id,
                        'document': Buffer.from(data).toString('base64'),
                        'content_type': mime.getType(resultFilePath + resultFile)
                    } },
                    function (error:any, response:any, body:any) {
                        console.log(body);
                    }
                );
            });

PHP code :

// set the POST content in $document
$document = base64_decode($document);
file_put_contents($fileName, $document);

Edit : The error was the encoding when I read the file ... replace

fs.readFile(FilePath, 'utf8', function(err, data) {

to

fs.readFile(FilePath, function(err, data) {

Answer 1

The error was the encoding when I read the file ... replace

fs.readFile(FilePath, 'utf8', function(err, data) {

to

fs.readFile(FilePath, function(err, data) {

Thanks all