PHP code that fools Espresso's syntax zones

donation.module

function sfapi_submit_cc_payment($donor=array(), $donation=array(), $cc_info=array(), $campaign_info=array()) {
  // First make sure we have all the necessary pieces of info, and log notices for any missing recommended info
  $required_info = array(
    'donor' => array(
      'first_name',
      'last_name',
      'email',
      'street_address',
      'city',
      'state',
      'zip',
    ),
    'donation' => array(
      'donation_amount',
    ),
    'cc_info' => array(
      'cc_number',
      'cc_cvv',
      'cc_exp_month',
      'cc_exp_year',
    ),
  );
  $recommended_info = array(
    'campaign_info' => array(
      'entity',
      'community',
      'fund',
      'sf_campaign_name',
    ),
  );
  // Log errors for missing required fields, and throw an exception to stop the transaction
  foreach ($required_info as $category => $fields) {
    foreach ($fields as $field) {
      if (!isset(${$category}[$field])) {
        watchdog('sfapi', t("Missing a required argument to sfapi_submit_cc_payment() : @argument", array('@argument' => $category . "['" . $field . "']",)), NULL, WATCHDOG_ERROR);
        throw new Exception(SFAPI_INTERNAL_CC_ERROR);
      }
    }
  }
  // Log warnings for missing recommended fields, but don't throw an exception
  foreach ($recommended_info as $category => $fields) {
    foreach ($fields as $field) {
      if (!isset(${$category}[$field])) {
        watchdog('sfapi', t("Missing a recommended argument to sfapi_submit_cc_payment() : @argument", array('@argument' => $category . "['" . $field . "']",)), NULL, WATCHDOG_WARNING);
      }
    }
  }

  *** SNIP ***

}