Codeigniter -> File Upload Path | Folder Create - php

Question

Currently I have the following:
$config['upload_path'] = 'this/path/location/';
What I would like to do is create the following controller but I am not sure how to attack it!!
$data['folderName'] = $this->model->functionName()->tableName;
$config['upload_path'] = 'this/'.$folderName.'/';
How would I create the $folderName? dictionary on the sever?
Jamie:
Could I do the following?
if(!file_exists($folderName))
{
$folder = mkdir('/location/'$folderName);
return $folder;
}
else
{
$config['upload_path'] = $folder;
}

Answer 1

am not sure what they are talking about by using the file_exist function since you need to check if its the directory ..
$folderName = $this->model->functionName()->tableName;
$config['upload_path'] = "this/$folderName/";
if(!is_dir($folderName))
{
mkdir($folderName,0777);
}
please note that :
i have added the permission to the folder so that you can upload files to it.
i have removed the else since its not useful here ( as #mischa noted )..

Answer 2

This is not correct:
if(!file_exists($folderName))
{
mkdir($folderName);
}
else
{
// Carry on with upload
}
Nothing will be uploaded if the folder does not exist! You have to get rid of the else clause.
$path = "this/$folderName/";
if(!file_exists($path))
{
mkdir($path);
}
// Carry on with upload
$config['upload_path'] = $path;

Answer 3

Not quite sure what you mean by 'dictionary', but if you're asking about how to create a variable:
$folderName = $this->model->functionName()->tableName;
$config['upload_path'] = "this/$folderName/";
To add/check the existence of a directory:
if(!file_exists($folderName))
{
mkdir($folderName);
}
else
{
// Carry on with upload
}

Answer 4

Not 100% sure what you want from your description so here are a few suggestions:
If you need to programmatically create a folder using PHP you can use the mkdir() function, see: http://php.net/manual/en/function.mkdir.php
Also, check out the Codeignitor file helper for reading and writing files:
http://codeigniter.com/user_guide/helpers/file_helper.html
If the folder already exists, you need to make sure the permissions are write-able. On windows you can right click on the folder, properties, security and edit there. On Linux you'll want the chmod command.