Onderstaand script kan een foto uploaden + beschrijving naar de database sturen. Ook zit er een kleine validatie op het upload formulier, maar hetgeen dat niet lukt is om de geüploade afbeeldingen naar mijn image/ en image/tn/ mappen te schrijven.

Heeft iemand een idee wat ik fout doe? Zo ziet alvast de structuur eruit:

images/
-tn/
css/
js/
index.php
config.php
functions.php
database.php

----index.php

PHP-code:
<?php 
require "config.php";require "functions.php";require "database.php";
if(isset(
$_FILES['fupload'])){    $filename $_FILES['fupload']['name'];    $source $_FILES['fupload']['tmp_name'];    $target $path_to_image_directory $filename;    $description addslashes($_POST['description']);    $src $path_to_image_directory $filename;    $tn_src $path_to_thumbs_directory $filename;
    if (
strlen($_POST['description'])<4)        $error['description'] = '<p class="alert">Please enter a description for your photo</p>';    if($filename == '' || !preg_match('/[.](jpg)|(gif)|(png)|(jpeg)$/'$filename))         $error['no_file'] = '<p class="alert">Please select an image, dummy! </p>';    if (!isset($error)){        move_uploaded_file($source$target);        echo "Stored in: " "images/" $_FILES["fupload"]["name"];
        
$q "INSERT into photo(description, src, tn_src)VALUES('$description', '$src','$tn_src')";        $result $mysqli->query($q) or die (mysqli_error($myqli));
        if (
$result) {            echo "Succes! Your file has been uploaded";        }        createThumbnail($filename);    }}?><!DOCTYPE html><html><head>    <meta charset="utf-8">    <meta http-equiv="X-UA-Compatible" content="IE=edge">    <title>Upload</title>    <link rel="stylesheet" href="css/styles.css"></head><body>    <h1>My photos</h1>        <ul><?php getPhotos(); ?></ul>    <h2>Upload a photo</h2>        <form enctype="multipart/form-data" action="index.php" method="post">        <input type="hidden" name="MAX_FILE_SIZE" value="30000" />        <input type="file" name="fupload" /><br/>        <textarea name="description" id="description" cols="50" rows="6"></textarea><br/>        <input type="submit" value="Upload photo" name="submit" />    </form>
    <?php    if (isset($error["description"])) {        echo $error["description"];    }
    if (isset(
$error["no_file"])) {        echo $error["no_file"];    }
    
?>
</body></html>
----config.php
PHP-code:
<?php
$final_width_of_image 
100;
$path_to_image_directory 'images/';$path_to_thumbs_directory 'images/tn/';

?>
----functions.php
PHP-code:
<?php
function getPhotos(){    require 'database.php';    $q "SELECT id, tn_src FROM photo ORDER BY id desc";    $result $mysqli->query($q) or die ($mysqli_error($mysqli));    if ($result){        while ($row $result->fetch_object()) {            $id $row->id;            $tn_src $row->tn_src;
            print 
'<li>                <a href="review_image.php?id=' $id '" >                <img src="' $tn_src '" alt="images" id="' $id '" />                </a>                </li>';            print "\n";        }    }}
function 
createThumbnail ($filename){
require 
"config.php";
}

?>