https://wtools.io/paste-code/bE3x

echo form_label('Upload Bank Cheque/Passbook');
echo form_file_select($filebank);
echo form_label('Experience Document (optional)');
echo form_file_select($fileexperience);
echo form_label('Upload passport size photo');
echo form_file_select($filephotopassport, array("placeholder" => "Enter filephotopassport"));
echo form_label('Address Proof');
echo form_file_select('fileaddress', $fileaddress, array("placeholder" => "Enter fileaddress")); File 1

$update_id = $this->model->insert($data, 'profiles');

$this->module('trongate_filezone');
$this->trongate_filezone->freizaupload($update_id,'profiles');

public function upload_picture($data)

{
"name": "freiza",
"lastname": "gen",
"gender": "female",
"filepan": "",
"filenbank": "",
"filepolice": "",
"fileaddress": "",
"url_string": "freiza"
}

Suppose I have all the files in $_FILES then how would I tell trongate framework to upload all the files to a desired location.

My $_FILES look like this:
{
"filepan": {
"name": "fourteen.png",
"full_path": "fourteen.png",
"type": "image\/png",
"tmp_name": "\/opt\/lampp\/temp\/phpRFRCcy",
"error": 0,
"size": 50792
},
"filenbank": {
"name": "",
"full_path": "",
"type": "",
"tmp_name": "",
"error": 4,
"size": 0
},
"fileaddress": {
"name": "",
"full_path": "",
"type": "",
"tmp_name": "",
"error": 4,
"size": 0
},
"filepolice": {
"name": "fourteen.png",
"full_path": "fourteen.png",
"type": "image\/png",
"tmp_name": "\/opt\/lampp\/temp\/phpX30HGs",
"error": 0,
"size": 50792
}
}

{
"Upload": {
"url_segments": "trongate_filezone/upload/{target_module}/{update_id}",
"request_type": "POST",
"description": "The endpoint for gallery uploads.",
"enableParams": false,
"required_fields": [
{
"name": "update_id",
"label": "Update ID"
},
{
"name": "target_module",
"label": "Target Module"
}
],
"authorization":{
"roles": [
"admin"
]
}
},
"Remove": {
"url_segments": "trongate_filezone/upload/{target_module}/{update_id}",
"request_type": "DELETE",
"description": "Removes then fetches remaining pictures.",
"enableParams": false,
"required_fields": [
{
"name": "update_id",
"label": "Update ID"
},
{
"name": "target_module",
"label": "Target Module"
}
],
"authorization":"*"
},
"Ditch": {
"url_segments": "trongate_filezone/ditch",
"request_type": "POST",
"description": "Removes item (from uploader page).",
"enableParams": false,
"authorization":{
"roles": [
"admin"
]
}
}
}

function upload() {
api_auth();

$request_type = $_SERVER['REQUEST_METHOD'];
$target_module = segment(3);
$update_id = segment(4);

if ($request_type == 'DELETE') {
$this->_remove_picture($target_module, $update_id);
} else {
$this->_do_upload($update_id, $target_module);
}

}

//submit code in mymodule
$update_id = $this->model->insert($data, 'profiles'); //get post data and insert inside database
$this->module('trongate_filezone'); // setting module to trongate_filezone
$this->trongate_filezone->freizaupload($update_id,'profiles'); //calling modified upload() from trongate_filezone


//modified code in trongate_filezone's _do_upload()
foreach ($_FILES as $key => $value) // iterating through all the files from $_Files
{
$file_name = $value['name'];
$new_file_name = $this->_prep_file_name($file_name);
$_FILES[$key]['name'] = $new_file_name;

//even in the for loop it is only uploading a single file from $_FILES
$this->upload_picture($config); // trying to upload all the files one by one, but it doesn't work because upload_picture is designed to accept only a single file from $_FILES. (This is my guess)
}

function upload_image_data($filedata, $target_module)

$userfile = array_keys($_FILES)[0];

public function upload_pictures($data) {

if (!isset($data['upload_to_module'])) {
$data['upload_to_module'] = false;
}

//check for valid image width and mime type
$userfile = $data['file'];
$target_file = $_FILES[$userfile];

$dimension_data = getimagesize($target_file['tmp_name']);
$image_width = $dimension_data[0];

if (!is_numeric($image_width)) {
die('ERROR: non numeric image width');
}

$content_type = mime_content_type($target_file['tmp_name']);

$str = substr($content_type, 0, 6);
if ($str !== 'image/') {
die('ERROR: not an image.');
}

$tmp_name = $target_file['tmp_name'];
$data['image'] = new Image($tmp_name);
$data['tmp_file_width'] = $data['image']->getWidth();
$data['tmp_file_height'] = $data['image']->getHeight();

if ($data['upload_to_module'] == true) {
$target_module = (isset($data['targetModule']) ? $data['targetModule'] : segment(1));
$data['filename'] = '../modules/' . $target_module . '/assets/' . $data['destination'] . '/' . $target_file['name'];
} else {
$data['filename'] = '../public/' . $data['destination'] . '/' . $target_file['name'];
}

if (!isset($data['max_width'])) {
$data['max_width'] = NULL;
}

if (!isset($data['max_height'])) {
$data['max_height'] = NULL;
}

$this->save_that_pic($data);

//rock the thumbnail
if ((isset($data['thumbnail_max_width'])) && (isset($data['thumbnail_max_height'])) && (isset($data['thumbnail_dir']))) {
$ditch = $data['destination'];
$replace = $data['thumbnail_dir'];
$data['filename'] = str_replace($ditch, $replace, $data['filename']);
$data['max_width'] = $data['thumbnail_max_width'];
$data['max_height'] = $data['thumbnail_max_height'];
$this->save_that_pic($data);
}
}

<?php
class Pic extends Trongate {

function index() {
$data['filebank'] = 'filebank';
$data['fileexperience'] = 'fileexperience';
$data['filephotopassport'] = 'filephotopassport';
$data['fileaddress'] = 'fileaddress';

$data['view_module'] = 'pic';
$this->view('display', $data);
}

function submit_upload_picture($update_id) {

$this->module('trongate_security');
$this->trongate_security->_make_sure_allowed();

// create image directory using id as name, in current module/assets or public folder
$picture_settings = $this->_init_picture_settings();
$this->_make_sure_got_destination_folders($update_id, $picture_settings);
extract($picture_settings);

foreach ($_FILES as $key => $value) {

if ($value['error'] == 0) {
// picture selected
$config['destination'] = $destination . '/' . $update_id;
$config['max_width'] = $resized_max_width;
$config['max_height'] = $resized_max_height;

if ($thumbnail_dir !== '') {
$config['thumbnail_dir'] = $thumbnail_dir . '/' . $update_id;
$config['thumbnail_max_width'] = $thumbnail_max_width;
$config['thumbnail_max_height'] = $thumbnail_max_height;
}

//upload the picture
$config['upload_to_module'] = (!isset($picture_settings['upload_to_module']) ? false : $picture_settings['upload_to_module']);
$config['file'] = $key;
$this->upload_pictures($config);
}

//update the database with the file name or clear it if none uploaded
$data[$key] = $value['name'];
$this->model->update($update_id, $data, 'freizas');
}
}

function _init_picture_settings() {
$picture_settings['max_file_size'] = 5000;
$picture_settings['max_width'] = 9000;
$picture_settings['max_height'] = 9000;
$picture_settings['resized_max_width'] = 450;
$picture_settings['resized_max_height'] = 450;
$picture_settings['destination'] = 'freizas_pics';
$picture_settings['target_column_name'] = 'picture';
$picture_settings['thumbnail_dir'] = 'freizas_pics_thumbnails';
$picture_settings['thumbnail_max_width'] = 120;
$picture_settings['thumbnail_max_height'] = 120;
$picture_settings['upload_to_module'] = true;
return $picture_settings;
}

function _make_sure_got_destination_folders($update_id, $picture_settings) {

$destination = $picture_settings['destination'];

if ($picture_settings['upload_to_module'] == true) {
$target_dir = APPPATH . 'modules/' . segment(1) . '/assets/' . $destination . '/' . $update_id;
} else {
$target_dir = APPPATH . 'public/' . $destination . '/' . $update_id;
}

if (!file_exists($target_dir)) {
//generate the image folder
mkdir($target_dir, 0777, true);
}

//attempt to create thumbnail directory
if (strlen($picture_settings['thumbnail_dir']) > 0) {
$ditch = $destination . '/' . $update_id;
$replace = $picture_settings['thumbnail_dir'] . '/' . $update_id;
$thumbnail_dir = str_replace($ditch, $replace, $target_dir);
if (!file_exists($thumbnail_dir)) {
//generate the image folder
mkdir($thumbnail_dir, 0777, true);
}
}
}
}

<?php

$update_id = 1;

echo form_open_upload(segment(1) . '/submit_upload_picture/' . $update_id);
echo validation_errors();
echo 'Please choose a pictures to upload and then press \'Upload\'.';

echo form_label('Upload Bank Cheque/Passbook') . '';
echo form_file_select($filebank) . '';
echo form_label('Experience Document (optional)') . '';
echo form_file_select($fileexperience) . '';
echo form_label('Upload passport size photo') . '';
echo form_file_select($filephotopassport) . '';
echo form_label('Address Proof') . '';
echo form_file_select($fileaddress) . '';


// echo form_file_select('picture');

echo form_submit('submit', 'Upload');
echo form_close();