original_string: public function sendMail($to, $subject = '', $message = '', $headers = '')
      {
          if (empty($headers)) {
              $headers = 'From: ' . APP_SYS_EMAIL;
          }
          mail($to, $subject, $message, $headers);
      }
code: public function sendMail($to, $subject = '', $message = '', $headers = '')
      {
          if (empty($headers)) {
              $headers = 'From: ' . APP_SYS_EMAIL;
          }
          mail($to, $subject, $message, $headers);
      }
code_tokens: public function sendMail ( $ to , $ subject = '' , $ message = '' , $ headers = '' ) { if ( empty ( $ headers ) ) { $ headers = 'From: ' . APP_SYS_EMAIL ; } mail ( $ to , $ subject , $ message , $ headers ) ; }
docstring: Sends an Email.
  
  @param $to
  @param string $subject
  @param string $message
  @param string $headers
docstring_tokens: Sends an Email .