title: Cakephp: Login function doesn't work on client server
body: <p>The login function can work on local server and uni server, but it doesn't work on the client's server.</p>
  
  <p>checked the salt, the same as local core.php 
  checked the password, char(40),
  set debug to 2,
  deleting the cache files from the app/tmp/cache folder and subfolders,</p>
  
  <p>but nothing happened, I still can not login the system.</p>
  
  <p>I am not sure where I should be looking next, I am very confused.</p>
  
  <p>client server
  PHP version:5.3.17
  CakePHP: 2.2.3</p>
  
  <p>Many Thanks.</p>