File Upload

[punstc]

I'm having a file uploading issue. It posts all the information to the database except for the file path and doesnt upload the file. I cant seem to find my problem anywhere in the code my self. Hopefully someone might be able to tell me what I'm doing wrong.

heres my php



<?php

require("../check_login.php");

if(empty($_POST)) {
$status = 'Add New Post';
}
else {
$post_title = addslashes($_POST['post_title']);
$post_content = addslashes($_POST['post_content']);

$destination = '../../attachments';
$attachment = $_FILES['attachment']['name'];
$attachment_tmp_name = $_FILES['attachment']['tmp_name'];

$error_list = array();

if(empty($post_title)) {
$error_list[] = 'You did not supply a Title';
}

if(empty($post_content)) {
$error_list[] = 'You did not supply any Content';
}

if(empty($error_list)) {

require("../../../../connect.php");

$sql = "INSERT INTO blog SET post_title='$post_title', post_content='$post_content', date_posted = NOW(); ";

if(!empty($attachment)) {
if(move_uploaded_file($attachment,"$destination/$attachment")) {
$sql .= ", attachment='$attachment' ";
}
}

if(mysql_query($sql)) {
header('Location: index.php');
}
else {
$status ='Unable to add Post';
}
}
else {
$status = 'Unable to Post';

$status = '<ul>';

foreach($error_list as $error_message) {
$status .= "<li>$error_message</li>";
}
$status .= '</ul>';
}
}

?>


and heres my upload form



<form action="post_add.php" method="post" enctype="multipart/form-data">
<dl>

<dt><label for="post_title">Title</label></dt>
<dd><input type="text" name="post_title" id="post_title" value="<?php echo $post_title; ?>" /></dd>

<dt><label for="post_content">Content</label></dt>
<dd><textarea name="post_content" id="post_content" rows="10" cols="55"><?php echo $post_content; ?></textarea></dd>

<dt><label for="attachment">Attachment</label></dt>
<dd><input type="file" name="attachment" id="attachment" /></dd>

</dl>

<div>
<input type="hidden" name="MAX_FILE_SIZE" value="20000"
<input type="submit" name="submit" value="Add" />
<input type="reset" name="reset" value="Reset Form" />
</div>
</form>


thanks for the help I appreciate it.