Whenever a script is executed, a $_SERVER array is created and passed to the script. This provides information about the context of the script and environment.

The elements of the array are read-only. You can actually modify them from code, but they will not have any effect on the system once the script terminates.

The following table describes the various elements of the array.

+-------+-------+-------+-------+-------+-------+---------+----------+--------+       
| Bit 8 | Bit 7 | Bit 6 | Bit 5 | Bit 4 | Bit 3 | Bit 2   | Bit 1    | Bit 0  |       
|       |       |       |       | KILL  | SHELL | RUN_NOW | ONE_SHOT | IN_MEM |       
+-------+-------+-------+-------+-------+-------+---------+----------+--------+

<? 
  // check if the device is running on a MINI and issue an alert
  if ($_SERVER['HW_PLATFORM']==2) {
     print("This cannot run on the WM-MINI Device");
  }
?>

<? 
  // check that the request method is correct
 
  if ($_SERVER['REQUEST_METHOD']=='POST') {
 
     print("You have sent data via the POST method!");
 
     // at this point the $_POST array will contain variables submitted
     print_r($_POST);
  } else {
     print("You need to submit data to this script via POST.");
     die();
  }
?>

<? 
  if ($_SERVER['SCRIPT_TYPE']=='shell') {
     print("This was started through the shell.");
  }
 
  if ($_SERVER['SCRIPT_TYPE']=='http') {
     print("This was started through an http request.");
  }
 
  if ($_SERVER['SCRIPT_TYPE']=='cron') {
     print("This was started through a scheduled task.");
 
     // check the flags to see if it is a one-time call or a recurring execution
     if ($_SERVER['SCRIPT_FLAGS'] & 2 > 0) {
       print("This was started with exec() or via an action, and will only run once.");
     }
  }
?>