Variable name change in a loop

[dombi]

What my script does takes a file upload and stores it in a specific folder on the server. I have several file uploads, so I figured I would use a loop to store all three of them. I cannot get the loop to work.
Here is a little sample that explains my problem.

for ($counter=1; $counter < $max_number_of_images; $counter++)
{
if (is_uploaded_file($imgfile["$counter"]))
{
$uploads = "uploads";
$images_dir = "$uploads/$id";
....

My file uploads are called imgfile1, imgfile2, and imgfile3. I want this for loop for go through all those. How can I tell php that in my if statement the counter variable should show up only as a 'PHP text'?

Basically php should read the if statement as:

if (is_uploaded_file($imgfile1))

if (is_uploaded_file($imgfile2))

if (is_uploaded_file($imgfile3))

Thank you, I hope that this makes sense...sorry if I am a little confusing, I am still new to PHP.

Thank you,

dombi

[andreasfriedrich]

Have a look at the PHP [php.net] manual for variable variables [php.net].

$imgfile1 = 'Aaron'; 
$i = 1; 
echo ${"imgfile$i"}; 

will print Aaron.

Since you can access uploaded files by the $_FILES superglobal you can use this code as well:

$_FILES["imgfile$1"] 

Andreas

[dombi]

Thank you so much for your help....I got it working. Whoo Hoo! It alwasy feels good to get things going after a little stall. So here is what I ended up changing:

for ($counter=1; $counter < $max_number_of_images; $counter++)
{
if (is_uploaded_file(${"imgfile".$counter}))
{
$uploads = "uploads";
$images_dir = "$uploads/$id";

So I can do something like this with a variable:

${"string".$counter."string".$counter2."string"}

Thank you once again!

dombi