PHP code example of macfja / php-kvo

1. Go to this page and download the library: Download macfja/php-kvo library. Choose the download type require.

2. Extract the ZIP file and open the index.php.

3. Add this code to the index.php.

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

macfja / php-kvo example snippets


class Downloader extends AbstractObservable
{
  protected $progress;
  public function getProgress()
  {
    return $this->progress;
  }
  protected function receiveCallback($newProgress)
  {
    $this->setValueForKey('progress', $newProgress);
    // ... do something with the data
  }
  public function download()
  {
    // ... start the download
  }
}

class ProgressDisplay implements Listener
{
  public function observeValueForKeyPath($keyPath, $object, $change, &$context)
  {
    if ($keyPath == 'progress') {
      echo sprintf('Download in progress (%d%%)%s', $change[Observer::CHANGE_NEW], PHP_EOL);
    }
  }
}

$downloader = new Downloader();
$progress = new ProgressDisplay();
$downloader->addObserverForKey($progress, 'progress', Observer::OPTION_NEW|Observer::OPTION_INITIAL);
$downloader->download()

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