200, 'time' => gmdate("s"), 'chat' => $chat, ); echo json_encode($json); break; case 'while': $oldsize = filesize($file); $newsize = filesize($file); while(true){ if($oldsize!=$newsize){ $chat = file_get_contents($file); $json=array( 'status' => 200, ); echo json_encode($json); exit; } clearstatcache(); $newsize = filesize($file); usleep(10000); } break; } } ?>