How to draw an image into QR code with PHP - php

Question

In my project I am trying to generate a QR code with an image in it based on stored blobs (1 Qr code + 1 logo) in my SQL table.
I have thw following code but can't seem to store the new image into my table.
Any help is appreciated.
<?php
//for connection
$sName = "localhost";
$sUser = "Username";
$sPass = "Password";
$sDb = "Database";
$Conn = new mysqli ($sName, $sUser, $sPass, $sDb);
//variables i pass from another app
$Email = mysqli_real_escape_string($Conn, $_POST["PassEmail"]);
$qContent = addslashes(file_get_contents($_FILES["file"]["tmp_name"]));
$qOverlay = addslashes (file_get_contents($_FILES["overlay"]["tmp_name"]));
$Sql = "SELECT * FROM `userprofile_login` INNER JOIN `userprofile_personalprofile` ON userprofile_login.userid = userprofile_personalprofile.userid WHERE userprofile_login.email = '".$Email."' ";
$Result = mysqli_query($Conn, $Sql);
if (mysqli_num_rows ($Result) > 0) {
$Row = mysqli_fetch_assoc ($Result);
$qCheckSql = "SELECT `userid` FROM `userprofile_qr` WHERE userid = '".$Row['userid']."' ";
$qCheckResult = mysqli_query($Conn, $qCheckSql);
$Row2 = mysqli_fetch_assoc($qCheckResult);
if (mysqli_num_rows ($qCheckResult) < 1) {
//if there 0 result from previous query, insert new data
$InsertSql = "INSERT INTO `userprofile_qr` (`userid`, `qrcode`, `overlay`)
VALUES ('".$Row['userid']."', '$qContent', '$qOverlay')";
$InsertResult = mysqli_query($Conn, $InsertSql);
} else {
//is there ia a result from the previous query, update data
$UpdateSql = "UPDATE `userprofile_qr` SET
`qrcode` = '$qContent',
`overlay` = '$qOverlay'
WHERE userid = '".$Row2['userid']."' ";
$UpdateResult = mysqli_query($Conn, $UpdateSql);
}
The first part works, the problem is the bottom part where I want to combine the QR code and the logo:
$qSql = "SELECT `qrcode`, `overlay` FROM `userprofile_qr` WHERE userid = '".$Row2['userid']."' ";
$qSelect = mysqli_query($Conn, $qSql);
include 'phpqrcode/qrlib.php';
$qRow = mysqli_fetch_assoc($qSelect);
$tImage = "<img src='data:image/png;base64,".base64_encode($qRow['qrcode'])."'/>";
$tOverlay = "<img src='data:image/png;base64,".base64_encode($qRow['overlay'])."'/>";
header("Content-type: image/png");
$aQr = imagecreatefromjpeg($tImage);
$QrWidth = imagesx($aQr);
$QrHeight = imagesy($aQr);
$aOverlay = imagecreatefrompng($tOverlay);
$OverlayWidth = imagesx($aOverlay);
$OverlayHeight = imagesy($aOverlay);
$OverlayQrWidth = $QrWidth / 3;
$OverlayQrHeight = $OverlayHeight / ($OverlayWidth / $OverlayQrWidth);
imagecopyresampled($aQr, $aOverlay, $OverlayQrWidth, $OverlayQrHeight, 0, 0, $OverlayQrWidth, $OverlayQrHeight, $OverlayWidth, $OverlayHeight);
imagepng($aQr);
$oImage = "<img src='data:image/png;base64,".base64_encode($aQr)."'/>";
$UpdateCombineSql = "UPDATE `userprofile_qr` SET
`combine` = '$oImage'
WHERE userid = '".$Row2['userid']."' ";
$CombineResult = mysqli_query($Conn, $UpdateCombineSql);
echo "Success";
}
?>