overwrite previous file while uploading image in codeigniter
You should supply the overwrite config parameter
$config['upload_path'] = './uploads/';$config['overwrite'] = TRUE;$this->load->library('upload', $config);$this->upload->initialize($config);See the Documentation for upload preferences
Preference: overwrite
Default Value: FALSE
Options: TRUE/FALSE (boolean)
Description: If set to true, if a file with the same name as the one you are uploading exists, it will be overwritten. If set to false, a number will be appended to the filename if another with the same name exists.