A small example of a policy-makers pattern

Policy-makers mode

/**

• Class Name: Tactics

• Description: The strategist class, add a new data format as needed, only need to define a new class name (such as HTMLData), the method name (GetData) is not changed, the specific content of the method can be implemented
  */
  Class Tactics {
  Example Array
  protected $demoList;

  Public Function __construct () {

  }

  /*

  • Add data
    */
    Public Function AddData ($key, $value) {
    $this->demolist[$key] = $value;
    }

  /*

  • Output different data formats based on data-format objects
    */
    Public Function Gettactics ($obj) {
    return $obj->getdata ($this->demolist);
    }
    }

/**

• Class Name: Jsondata
• Description: Data in JSON format
  */
  Class Jsondata {
  Public Function GetData ($data) {
  Return Json_encode ($data);
  }
  }

/**

• Class Name: XmlData
• Description: Data in XML format
  */
  Class XmlData {
  Public Function GetData ($data) {
  $xml = ' <?xml version= ' 1.0 "encoding=" Utf-8 "?>";
  $xml. = ' <data> ';
  foreach ($data as $key = = $value) {
  $xml. = ' <group> ';
  $xml. = ' <key> ' $key. ' </key> ';
  $xml. = ' <value> ' $value. ' </value> ';
  $xml. = ' </group> ';
  }
  $xml. = ' </data> ';
  return $xml;
  }
  }

Instantiating an object of a policy-person class
$TACTICSOBJ = new Tactics ();

Assigning a value to a property in a class
$TACTICSOBJ->adddata (' name ', ' Zhang San ');
$TACTICSOBJ->adddata (' Age ', ' 18 ');

Pass an object of type Jsondata, get the JSON data format
Echo $TACTICSOBJ->gettactics (new Jsondata);
Pass an object of type XMLData, get the XML data format
Echo $TACTICSOBJ->gettactics (new XmlData);

A small example of a policy-makers pattern