original_string: protected function _sendHeader($name, $value = null)
      {
          deprecationWarning(
              'Will be removed in 4.0.0'
          );
  
          if ($value === null) {
              header($name);
          } else {
              header("{$name}: {$value}");
          }
      }
code: protected function _sendHeader($name, $value = null)
      {
          deprecationWarning(
              'Will be removed in 4.0.0'
          );
  
          if ($value === null) {
              header($name);
          } else {
              header("{$name}: {$value}");
          }
      }
code_tokens: protected function _sendHeader ( $ name , $ value = null ) { deprecationWarning ( 'Will be removed in 4.0.0' ) ; if ( $ value === null ) { header ( $ name ) ; } else { header ( "{$name}: {$value}" ) ; } }
docstring: Sends a header to the client.
  
  @param string $name the header name
  @param string|null $value the header value
  @return void
  @deprecated 3.4.0 Will be removed in 4.0.0
docstring_tokens: Sends a header to the client .