Curl/PHP challenge transferring image and base64_encode/decode - php

Question

I am transfering data from one linux-box to another. In generel this works fine, BUT I am having trouble when it comes to transferring images. I have tested all kinds of stuff. I hope some one may be able to help me out.
$filename = "/home/user/image.jpg";
$handle = fopen($filename, "r");
$data = fread($handle, filesize($filename));
$data = base64_encode($data);
# Transfer reading
#$arrIn['changeCharset'] = "true";
$arrIn['postFields'] = "action=test&data=$base64";
$test = curlServerPost($arrIn);
Here is my CURL-function:
function curlServerPost($arrIn)
{
$postFields = $arrIn['postFields'];
$url = "$GLOBALS[remoteSite]"; // Where you want to post data
$ch = curl_init(); // Initiate cURL
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_POST, true); // Tell cURL you want to post something
curl_setopt($ch, CURLOPT_POSTFIELDS, $postFields); // Define what you want to post
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); // Return the output in string format
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); // Accepter alle certifikater, se: http://unitstep.net/blog/2009/05/05/using-curl-in-php-to-access-https-ssltls-protected-sites/
$res = curl_exec($ch); // Execute
curl_close($ch); // Close cURL handle
return($res);
}
Finally, here is the receiver (server) part
$data = $_POST[data];
$data = base64_decode($data);
$stmt = $GLOBALS[pdo]->prepare("INSERT INTO cameraImages (cameraImagesId) VALUES ('')");
$stmt->execute();
$cameraImagesId = $GLOBALS[pdo]->lastInsertId();
$stmt = $GLOBALS[pdo]->prepare("UPDATE cameraImages SET cameraImagesFile='$data' WHERE cameraImagesId='$cameraImagesId'");
$stmt->execute();
Some last remarks:
- If I don't base_decode on server-side I receive (but completely wrong format. Errors in image)
If I base_decode om server-side. Nothing is received.
I would like to don't encode/decode at all. If I do that. Only a small part of the image is stored (corrupted image)
My datafield is LONGBLOB (mysql)
PHP on server side is: PHP 5.3.3
PHP on client side is: PHP 7.0.27-0+deb9u1
I have tried all kinds of stuff. Followed all kinds of tutorials. It just won't work for me :-/
So if anyone can come up with ideas I am more than willing to test and try :)
Loooking forward to hear from you.

Answer 1

Succes. I just needed
urlencode($data);
And removed base64_encode($data); / base64_decode($data);
I have dropped putting images in database since many ppl don't recommend it.