Description
bool 
mcrypt_generic_deinit ( resource td )
     This function terminates encryption specified by the encryption
     descriptor (td). It clears all buffers, but does
     not close the module.  You need to call
     mcrypt_module_close() yourself. (But PHP does this for
     you at the end of the script.)  Returns FALSE on error, or TRUE on
     success.
    
     See for an example mcrypt_module_open() and the
     entry on mcrypt_generic_init().