http_send_last_modified
    (PECL)
http_send_last_modified -- Send Last-Modified
Description
bool 
http_send_last_modified ( [int timestamp] )
   Send a Last-Modified header with a valid HTTP date.
  
Parameters
   
- timestamp
 
       a unix timestamp, converted it to a valid HTTP date;
       if omitted, the current time will be sent
      
 
  Return Values
   Returns TRUE on success or FALSE on failure.