Simple application example of php adapter mode

This article describes the simple application of PHP adapter mode. Share it for your reference, as follows:

Adapter Pattern is a bridge between two incompatible interfaces. This type of design pattern is a structural pattern, which combines the functions of two independent interfaces.

This pattern involves a single class that is responsible for joining independent or incompatible interface functions. To give a real example, the card reader is used as an adapter between the memory card and the notebook. You insert the memory card into the card reader and then the card reader into the notebook so that the memory card can be read through the notebook.

Example:

//Suppose that a weather interface is developed using PHPclass Weather{
  public static function show(){
    $info = array(
      'temperature' => '25°C',
      'wind' => 'Northwest wind level 3 to 4',
      'weather' => 'clear',
      'PM2.5' => 60
    );
    return serialize($info);
  }
}
//PHP client call$msg = Weather::show();
$msg_arr = unserialize($msg);
echo $msg_arr['weather'];
//At this time, if Java and Python also call the weather interface,//But the serialized string is not recognized, but the old interface and old php call cannot be modified.//At this time, you can use a new class inheritance, that is, the adapter mode to modify the returned data format to jsonclass WeatherAdapter extends Weather{
  public static function show(){
    $info = parent::show();
    $info_arr = unserialize($info);
    return json_encode($info_arr);
  }
} 
//Java and python can be used with the returned json$msg = WeatherAdapter::show();

Running results:

clear

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