1 <?php
  2
  3 class Planning {
  4
  5         // Variable
  6         private $parameter_day;
  7
  8         function Planning($arg) {
  9                 $parameter_day = $arg;
 10                 echo $arg;
 11                 echo $parameter_day;
 12         }
 13
 14         function display_all () {
 15                 echo $this->day_parameter;
                  ...
 25             
 26         }
 27 }
 28 ?>