codeigniter multiple file uploader by : Romaldy Minaya

MY_Upload.php

<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
 /*
 *//**
 * CodeIgniter
 *
 * An open source application development framework for PHP 5.1.6 or newer
 *
 * @package     CodeIgniter
 * @author      Romaldy Minaya
 * @copyright   Copyright (c) 2011, PROTOS.
 * @license     GLP
 * @since       Version 1.0
 * @version     1.4
 */
 
// ------------------------------------------------------------------------
 
/**
 * File Uploading Extender
 *
 * @package     CodeIgniter
 * @subpackage  Libraries
 * @category    Uploads
 * @author      Romaldy Minaya
 *
 
// ------------------------------------------------------------------------
 
Documentation?
 
This class lets you make the upload process even easier by extending the 
CI_Upload class and adding some funtionality named below:
 
*1)Upload multiple files in just one shot.
*2)Creates the path where you want the files to be saved automatically.
*3)Creates and index.php file in each folder by passing TRUE to the up() function.
*4)Modify the same preferences that you used to with the original upload class, here is
the link of the documentation http://codeigniter.com/user_guide/libraries/file_uploading.html.
 
Implementation
 
*1)Copy this code in the view_file
 
 <form method="POST" action="" enctype="multipart/form-data">
  <input type="file" name="file_1" size="20" /> 
  <input type="file" name="file_2" size="20" />
  <input type="file" name="file_3" size="20" />
  <input type="submit" name="test" value="TEST" />
  </form>
 
*2)In your controller file copy the code below
 
 $this->load->library('upload');
 
 $config['upload_path']   = './uploads'; //if the files does not exist it'll be created
 $config['allowed_types'] = 'gif|jpg|png|xls|xlsx|php|pdf';
 $config['max_size']   = '4000'; //size in kilobytes
 $config['encrypt_name']  = TRUE;
 
 $this->upload->initialize($config);
 
 $uploaded = $this->upload->up(TRUE); //Pass true if you want to create the index.php files
 
 var_dump($uploaded); //prints the result of the operation and analize the data
 
 */
 
class MY_Upload extends CI_Upload{
 
    public function __construct(){    
        parent::__construct();
    }
 
    /**?
    * @return void?
    * @param void?
    * @desc This functions starts the upload process?
    */ 
    public function up($protect = FALSE){
 
        $uploaded_info  = FALSE;
        $multi_files    = Array();
        $uni_files      = Array();
 
        if($this->upload_path[strlen($this->upload_path)-1] != '/')
            $this->upload_path .= '/';
 
        #Now we flattern the $_FILES variable from multidimensional array to bidimensional array.?
        #   Added 6/9/2012?
        //------------------------------------------------------------------------------------------?
        foreach($_FILES as $index => $file){
            if(is_array($file['tmp_name'])){
                $temp_file_array = array_map(   
                    NULL,$file['name'],$file['type'],$file['tmp_name'],$file['error'],$file['size']
                );
                foreach($temp_file_array as $index2 => $temp_file_array_2){
                    $temp_file_array[$index2][] = $index;
                }
                $multi_files += $temp_file_array;
            }else{
                #Here we add the file_input attribute to the array 
                #wich contains the name of the input's file
                $file['file_input'] = $index;
                $uni_files[] = $file;
            }
        }
 
        #Finalizing the conversion proccess
        $temp_file_array = Array();
 
        foreach($multi_files as $file){
            $temp_file_array[] = Array( 'name'      => $file[0],
                                        'type'      => $file[1],
                                        'tmp_name'  => $file[2],
                                        'error'     => $file[3],
                                        'size'      => $file[4],
                                        'file_input'=> $file[5]);
        }
        
        #After flattening the array we pass everything to the $_FILES Array
        $_FILES = array_merge($temp_file_array,$uni_files);
        unset($multi_files,$uni_files,$temp_file_array); //Then we clean the memory
        //------------------------------------------------------------------------------------------
        if(isset($_FILES)){
            #Here we check if the path exists if not then create
            if(!file_exists($this->upload_path)){
                @mkdir($this->upload_path,0700,TRUE);
            }
 
            #Here we create the index file in each path's directory
            if($protect){
                $folder = '';
                foreach(explode('/',$this->upload_path)  as $f){
                    $folder .= $f.'/';
                    $text = "<?php echo 'Directory access is forbidden.'; ?>";
 
                    if(!file_exists($folder.'index.php')){
                        $index = $folder.'index.php'; 
                        $Handle = fopen($index, 'w');
                        fwrite($Handle, trim($text));
                        fclose($Handle); 
                    }
                }   
            }
 
           #Here we do the upload process
            foreach($_FILES as $file => $value){                
                if( $value['size'] > 0 ){
                    if (!$this->do_upload($file)){
                        $uploaded_info['error'][]  =    array_merge($this->data(),
                                                            Array(  'error_msg' => $this->display_errors(),
                                                                    'file_input'=> $value['file_input']
                                                            )
                                                        );
                        $this->error_msg = Array();
                    }
                    else{
                        $uploaded_info['success'][] =   array_merge($this->data(),
                                                            Array(  'error_msg' => $this->display_errors(),
                                                                    'file_input' => $value['file_input']
                                                            )
                                                        );
                        $this->error_msg = Array();
                    }
                }
            }  
        }
 
        #Then return what happened with the files
        return $uploaded_info;
    }
}
 
/* End of file MY_Upload.php */
?>