function advagg_json_encode in Advanced CSS/JS Aggregation 7.2

Converts a PHP variable into its JavaScript equivalent.

Parameters

mixed $data: Usually an array of data to be converted into a JSON string.

Return value

string If there are no errors, this will return a JSON string. FALSE will be returned on failure.

2 calls to advagg_json_encode()

advagg_pre_render_scripts in ./advagg.module

Callback for pre_render to add elements needed for JavaScript to be rendered.

_advagg_process_html in ./advagg.module

Replacement for template_process_html().

File

./advagg.module, line 4753

Advanced CSS/JS aggregation module.

Code

function advagg_json_encode($data) {

  // Different versions of PHP handle json_encode() differently.
  static $php550;
  static $php540;
  static $php530;
  if (!isset($php550)) {
    $php550 = version_compare(PHP_VERSION, '5.5.0', '>=');
  }
  if (!isset($php540)) {
    $php540 = version_compare(PHP_VERSION, '5.4.0', '>=');
  }
  if (!isset($php530)) {
    $php530 = version_compare(PHP_VERSION, '5.3.0', '>=');
  }

  // Use fallback drupal encoder if PHP < 5.3.0.
  if (!$php530) {
    return @drupal_json_encode($data);
  }

  // Default json encode options.
  $options = JSON_HEX_TAG | JSON_HEX_APOS | JSON_HEX_AMP | JSON_HEX_QUOT;
  if ($php550 && variable_get('advagg_cache_level', ADVAGG_CACHE_LEVEL) >= 0) {

    // Output partial json if not in development mode and PHP >= 5.5.0.
    $options |= JSON_PARTIAL_OUTPUT_ON_ERROR;
  }
  if ($php540 && variable_get('advagg_cache_level', ADVAGG_CACHE_LEVEL) < 0) {

    // Pretty print JSON if in development mode and PHP >= 5.4.0.
    $options |= JSON_PRETTY_PRINT;
  }

  // Encode to JSON.
  $json_data = @json_encode($data, $options);

  // Uses json_last_error() if in development mode.
  if (variable_get('advagg_cache_level', ADVAGG_CACHE_LEVEL) < 0) {
    $error_number = json_last_error();
    switch ($error_number) {
      case JSON_ERROR_NONE:
        $error_message = '';
        break;
      case JSON_ERROR_DEPTH:
        $error_message = 'Maximum stack depth exceeded';
        break;
      case JSON_ERROR_STATE_MISMATCH:
        $error_message = 'Underflow or the modes mismatch';
        break;
      case JSON_ERROR_CTRL_CHAR:
        $error_message = 'Unexpected control character found';
        break;
      case JSON_ERROR_SYNTAX:
        $error_message = 'Syntax error, malformed JSON';
        break;
      case JSON_ERROR_UTF8:
        $error_message = 'Malformed UTF-8 characters, possibly incorrectly encoded';
        break;
      default:
        $error_message = 'Unknown error: ' . $error_number;
        break;
    }
    if (!empty($error_message)) {
      if (is_callable('httprl_pr')) {
        $pretty_data = httprl_pr($data);
      }
      elseif (is_callable('kprint_r')) {

        // @codingStandardsIgnoreLine
        $pretty_data = kprint_r($data, TRUE);
      }
      else {
        $pretty_data = '<pre>' . filter_xss(print_r($data, TRUE)) . '</pre>';
      }
      watchdog('advagg_json', 'Error with json encoding the Drupal.settings value. Error Message: %error_message. JSON Data: !data', array(
        '%error_message' => $error_message,
        '!data' => $pretty_data,
      ), WATCHDOG_ERROR);
    }
  }
  return $json_data;
}