private function SeriesToggle::getData in Flot 8

Fetch the data from the raw text file.

File

flot_examples/src/Controller/SeriesToggle.php, line 46

Class

SeriesToggle

Display a chart demonstrating hiding series.

Namespace

Drupal\flot_examples\Controller

Code

private function getData() {
  $file_path = DRUPAL_ROOT . '/' . drupal_get_path('module', 'flot_examples') . '/src/Controller/MilitaryData.txt';
  $file = fopen($file_path, "r") or die("Unable to open file: {$file_path}");
  $countries = [
    'usa',
    'russia',
    'uk',
    'germany',
    'denmark',
    'sweden',
    'norway',
  ];
  $data = [];
  while (!feof($file)) {
    $line = fgets($file);
    $values = explode(', ', $line);
    if (count($values) > 1) {
      $year = $values[0];
      foreach ($countries as $key => $country) {
        if ($values[$key + 1] != "") {
          $data[$country]['data'][] = [
            $year,
            $values[$key + 1],
          ];
        }
      }
    }
  }
  fclose($file);
  return $data;
}