Upload afbeeldingen naar server / database

<?php
if(isset($_POST['submit'])){
    // Include database config
    include_once 'dbconfig.php';
    
    // File upload config
    $targetDir = "uploads/";
    $allowTypes = array('jpg','png','jpeg','gif');
    
    $statusMsg = $errorMsg = $insertValuesSQL = $errorUpload = $errorUploadType = '';
    if(!empty(array_filter($_FILES['files']['name']))){
        foreach($_FILES['files']['name'] as $key=>$val){
            // File upload path
            $fileName = basename($_FILES['files']['name'][$key]);
            $targetFilePath = $targetDir . $fileName;
            
            // Check het file type
            $fileType = pathinfo($targetFilePath,PATHINFO_EXTENSION);
            if(in_array($fileType, $allowTypes)){
                // Upload file naar server
                if(move_uploaded_file($_FILES["files"]["tmp_name"][$key], $targetFilePath)){
                   
                    $insertValuesSQL .= "('".$fileName."', NOW()),";
                }else{
                    $errorUpload .= $_FILES['files']['name'][$key].', ';
                }
            }else{
                $errorUploadType .= $_FILES['files']['name'][$key].', ';
            }
        }
        
        if(!empty($insertValuesSQL)){
            $insertValuesSQL = trim($insertValuesSQL,',');
            //file naam in database
            $insert = $db->query("INSERT INTO images (file_name, uploaded_on) VALUES $insertValuesSQL");
            if($insert){
                $errorUpload = !empty($errorUpload)?'Upload Error: '.$errorUpload:'';
                $errorUploadType = !empty($errorUploadType)?'File Type Error: '.$errorUploadType:'';
                $errorMsg = !empty($errorUpload)?'<br/>'.$errorUpload.'<br/>'.$errorUploadType:'<br/>'.$errorUploadType;
                $statusMsg = "Files are uploaded successfully.".$errorMsg;
            }else{
                $statusMsg = "Sorry, there was an error uploading your file.";
            }
        }
    }else{
        $statusMsg = 'Please select a file to upload.';
    }
    
    // Display status bericht
    echo $statusMsg;
}
?>

<form action="" method="post" enctype="multipart/form-data">
    Select Image Files to Upload:
    <input type="file" name="files[]" multiple>
    
    <input class="upload-btn" type="submit" name="submit" value="UPLOAD">
</form>