使用Ajax进行URL加密

Question

I want to encrypt assignment_id in url which retrived on ajax table

<a href="<?php echo base_url()?>index.php/Welcome/quotation_detailed?assignment_id='+data[i].assignment_id+'" class="btn btn-success btn-sm item_edit" data-assignment_id="'+data[i].assignment_id+'">'+data[i].assignment_id+'</a>

Answer 1

There are indeed possibilities to achieve what you want - here is a step by step guide

1. Read the docs - CI provides an encryption library - take a look here - and define the generated key as described in your config.php

2. create a helper in your application/helpers folder, call it encryption_helper.php and put the following functions in

   function ci_encode($str_to_encode) {
       $CI = get_instance();
   
       if (!empty($str_to_encode)) {
           return bin2hex($CI->encryption->encrypt($str_to_encode));
       }
       return $str_to_encode;
   }
   
   function ci_decode($str_to_decode) {
       $CI = get_instance();
       return $CI->encryption->decrypt(pack('H*', $str_to_decode));
   }
   

3. Go to your autoload.php in your application/config folder and autoload the library and the helper. Something like $autoload['libraries'] = array(...,'encryption'); and $autoload['helper'] = array(...,'encryption_helper'); should work

4. now you can encode / decode whatever you want - based on your example:

   <a href="<?php echo base_url();?>Admin/assignments_detailed?assignment_id=<?php echo ci_encode($row->assignment_id) ?>"><?php echo $row->assignment_id; ?></a>
   

   and decoding

   echo ci_decode($this->input->get('assignment_id');
   

But keep in mind - the main problem is that you try to obfuscate some information which should never be obfuscated - in the end it is your responsibility to handle data properly - even if some user tries to manipulate it