CodeIgniter 3. Upload image twice but with different file name - php

Question

[SOLVED]
I am having a problem in function in my controller. I want to upload a single image twice and save it in the same directory but have different file names.
Here's my form(view.php):
<form action="<?php echo base_url("process/testFunction"); ?>" enctype="multipart/form-data" method="post">
<input type="file" name="file_data" size="50" required>
<input type="hidden" name="user_id" value="<?php echo $this->session->userdata('user_id'); ?>" readonly>
<input type="hidden" name="purpose" value="Picture" readonly>
<input type="submit" value="Save Changes">
</form>
controller.php:
function testFunction(){
$userID = $this->input->post('user_id');
$purpose = $this->input->post('purpose');
$randomText = time();
if($purpose == "Picture"){
$uploadPath = "./uploads/images/";
$allowedTypes = "jpg|jpeg|png";
$maxSize = 10000000;
$fileName = "PP_".$userID.".jpeg";
$fileName2 = "PP_".$userID."_".$randomText.".jpeg"; //for backup
}
$config = array(
'upload_path' => $uploadPath,
'allowed_types' => $allowedTypes,
'max_size' => $maxSize,
'file_name' => $fileName
);
$configClone = array(
'upload_path' => $uploadPath,
'allowed_types' => $allowedTypes,
'max_size' => $maxSize,
'file_name' => $fileName2
);
$this->load->library('upload', $config);
$this->load->library('upload', $configClone);
if($this->upload->do_upload('file_data')){
echo "Uploaded";
}else{
echo $this->upload->display_errors();
}
}
What is currently happening in my code is. Although it uploads 2 same images. The file name with "Random Text" is not working.
[Solution]: controller file. I modified some lines.
Reference: Javier's answer below
$this->load->library('upload', $config);
if($this->upload->do_upload('file_data')){
unset($this->upload);
$this->load->library('upload', $configClone);
$this->upload->do_upload('file_data');
echo "Uploaded";
}else{
echo $this->upload->display_errors();
}

Answer 1

Loading the upload library twice in a row, even with different configuration arrays, won't do anything. Codeigniter will ignore the second $this->load->library(); statement if the library is already on memory. This is intended to prevent conflicts, race conditions, etc.
You'd need to:-
load the first instance of the library
process the first upload
unload the first instance of the library
load the second instance of the library
process the second upload
Point number 3 could for example be achieved using unset($this->upload); after processing the first upload.

Answer 2

Remove this line
$this->load->library('upload', $configClone);
Change
if($this->upload->do_upload('file_data')){
$this->upload->initialize($configClone);
if($this->upload->do_upload('file_data')){
echo "Uploaded";
}else{
echo $this->upload->display_errors();
}
}else{
echo $this->upload->display_errors();
}
Explanation: Javier Larroulet's answer