Reusing code (function?) in PHP - php

Question

Got this bit of code:
if ($_FILES["file1"]["error"] == 0) {
move_uploaded_file($_FILES["file1"]["tmp_name"], "path/".$_FILES["file1"]["name"]);
}
I would like to reuse it for more files being uploaded. Was thinking function with some params but it seems i can't get the vars correctly.
Ok fixed it like this:
function upload($file) {
$allowedExts = array("pdf, jpg, gif, png");
$extension = end(explode(".", $_FILES[$file]["name"]));
if (in_array($extension, $allowedExts)) && ($_FILES[$file]["error"] == 0) {
move_uploaded_file($_FILES[$file]["tmp_name"], "img/new/".$_FILES[$file]["name"]);
}
}
And calling via:
upload("file1");
Not sure about the $_FILES loop...

Answer 1

You can loop through the $_FILES array and execute your code for each file, like this:
foreach($_FILES as $file)
{
if ($file["error"] == 0) {
move_uploaded_file($file["tmp_name"], "path/".$file["name"]);
}
}

Answer 2

You could do this
function upload_file($file, $upload_path)
{
if($file["error"] == 0){
$moved = move_uploaded_file($file["tmp_name"], $upload_path.$file["name"]);
if($moved){
return true;
}
}
return false;
}
simple but works for your needs.

Answer 3

Documentation: PHP File Uploads
This works:
<?php
if(isset($_FILES['file']['tmp_name']))
{
$num_files = count($_FILES['file']['tmp_name']);
for($i=0; $i < $num_files;$i++)
{
if(!is_uploaded_file($_FILES['file']['tmp_name'][$i]))
{
$messages[] = 'No file uploaded';
}
else
{
if(move_uploaded_file(($_FILES['file']['tmp_name'][$i],$upload_dir.'/'.$_FILES['file']['name'][$i]))
{
$messages[] = $_FILES['file']['name'][$i].' uploaded';
}
else
{
$messages[] = 'Uploading '.$_FILES['file']['name'][$i].' Failed';
}
}
}
}
?>
Note: It's a good idea to validate the files using exif_imagetype(), getimagesize() and similar.. Every other value than $_FILES['image']['tmp_name'] and $_FILES['image']['error'] shouldn't be trusted. It takes whatever is sent from the browser and can easily be faked.