Codeigniter Multiple file upload and thumbnail creation: only one thumbnail being uploaded - file-upload

Question

I am able to upload my images ok, I am able to create thumbnails ok, but only the first thumbnail is being uploaded. I checked the error code for the resize function and they all say 'true' (Success). However, if I upload 4 files, only the first is being uploaded to the thumbnail folder. Here is my code:
function _upload_them_images($_FILES, $last_insert_id)
{
$error = '';
// for($i=0; $i<count($_FILES); $i++)
for($i=0; $i<count($_FILES['imagefile']['name']); $i++)
{
$_FILES['userfile']['name'] = $_FILES['imagefile']['name'][$i];
$_FILES['userfile']['type'] = $_FILES['imagefile']['type'][$i];
$_FILES['userfile']['tmp_name'] = $_FILES['imagefile']['tmp_name'][$i];
$_FILES['userfile']['error'] = $_FILES['imagefile']['error'][$i];
$_FILES['userfile']['size'] = $_FILES['imagefile']['size'][$i];
$config['file_name'] = $last_insert_id.'_'.time().rand(1000,9999).$i;
$config['upload_path'] = './images/vehicles/';
$config['allowed_types'] = 'jpg|jpeg|gif|png';
$config['max_size'] = '1000';
$config['overwrite'] = FALSE;
$this->upload->initialize($config);
if($this->upload->do_upload())
{
$upload_result = $this->upload->data();
$rc = $this->_image_name_into_database(
$last_insert_id,
$upload_result['file_name']);
$image_config = array(
'source_image' =>$upload_result['full_path'],
'new_image' => './images/vehicles/thumbs/',
'create_thumb' => TRUE,
'maintain_ratio' => TRUE,
'width' => 75,
'height' => 50
);
$this->load->library('image_lib', $image_config);
$resize_rc = $this->image_lib->resize();
$error += 0;
}
else
{
//if the image was not uploaded successfully, try resizing
$error += 1;
}
}
if($error > 0)
{
return FALSE;
}
else
{
return TRUE;
}
}

Answer 1

Your image library parameters aren't being updated in the loop. When you call $this->load->...., duplicate items are ignored. You should instead re-initialize the image library with:
$this->image_lib->clear();
$this->image_lib->initialize($image_config);
Before each ->resize()