PHP - Creating and uploading to directories - php

Question

I am trying to upload files to a directory created with PHP. The application should create a sub-directory inside the root directory according to a User's UserID. (for e.g. files/14/).
The directory is being created, however the files are not being uploaded to the sub-directory.
This is the code:
<?php
include("dbConfig.php");
$Username = $_SESSION["username"];
global $userid;
$Password = $_SESSION["password"];
$Password = md5($Password);
$sql = "SELECT UserID FROM users WHERE Username = '".$Username."'";
$result = mysql_query($sql) or die(mysql_error());
while($row = mysql_fetch_assoc($result)) {
$userid = $row['UserID'];
}
echo $userid;
$dirname = (string)$userid;
$filename = ("/folder/" . "$dirname" . "/");
if (!file_exists($filename))
{
mkdir("files/$dirname", 0777);
if (isset($_FILES['files'])) {
echo "<div id='files_table'><table class='center'.><tr><td>";
$dest = ("files/" . $dirname . "{$_FILES['files']['name'][$key]}");
foreach($_FILES['files']['tmp_name'] as $key => $tmp_name){
move_uploaded_file($tmp_name, $dest );
echo $_FILES['files']['name'][$key], " uploaded.", "<br>";
}
}else {
if (isset($_FILES['files'])) {
echo "<div id='files_table'><table class='center'.><tr><td>";
$dest = ("files/" . $dirname . "{$_FILES['files']['name'][$key]}");
foreach($_FILES['files']['tmp_name'] as $key => $tmp_name){
move_uploaded_file($tmp_name, $dest );
echo $_FILES['files']['name'][$key], " uploaded.", "<br>";
}
echo "</td></tr></table></div><br><br>";
}
}
}

Answer 1

Brain,
PHP support one file upload at one time, if you have many file fields in your form, you should keep "$dest = ("files/" . $dirname . "{$_FILES['files']['name'][$key]}");" in the loop.
$Key will be empty outside the loop.
Loop can't be on temp_name, temp_name is a temp copy of the file which php is going to upload.

Answer 2

Here is the modified code:
Note: I corrected some errors in your code too. please compare.
<?php
include("dbConfig.php");
$Username = $_SESSION["username"];
global $userid;
$Password = $_SESSION["password"];
$Password = md5($Password);
$sql = "SELECT UserID FROM users WHERE Username = '".$Username."'";
$result = mysql_query($sql) or die(mysql_error());
while($row = mysql_fetch_assoc($result)) {
$userid = $row['UserID'];
}
$dirname = (string)$userid;
$filename = ("$dirname" . "/");
if (!file_exists($filename)) {
mkdir("files/$dirname", 0775);
}
if (isset($_FILES['files'])) {
echo "<div id='files_table'><table class='center'.><tr><td>";
foreach($_FILES['files']['tmp_name'] as $key => $tmp_name){
$dest = ("files/" . $dirname . "{$_FILES['files']['name'][$key]}");
move_uploaded_file($tmp_name, $dest );
echo $_FILES['files']['name'][$key], " uploaded.", "<br>";
}
}
?>