original_string: public function httpCodes($code = null)
      {
          deprecationWarning('Response::httpCodes(). Will be removed in 4.0.0');
  
          if (empty($code)) {
              return $this->_statusCodes;
          }
          if (is_array($code)) {
              $codes = array_keys($code);
              $min = min($codes);
              if (!is_int($min) || $min < 100 || max($codes) > 999) {
                  throw new InvalidArgumentException('Invalid status code');
              }
              $this->_statusCodes = $code + $this->_statusCodes;
  
              return true;
          }
          if (!isset($this->_statusCodes[$code])) {
              return null;
          }
  
          return [$code => $this->_statusCodes[$code]];
      }
code: public function httpCodes($code = null)
      {
          deprecationWarning('Response::httpCodes(). Will be removed in 4.0.0');
  
          if (empty($code)) {
              return $this->_statusCodes;
          }
          if (is_array($code)) {
              $codes = array_keys($code);
              $min = min($codes);
              if (!is_int($min) || $min < 100 || max($codes) > 999) {
                  throw new InvalidArgumentException('Invalid status code');
              }
              $this->_statusCodes = $code + $this->_statusCodes;
  
              return true;
          }
          if (!isset($this->_statusCodes[$code])) {
              return null;
          }
  
          return [$code => $this->_statusCodes[$code]];
      }
code_tokens: public function httpCodes ( $ code = null ) { deprecationWarning ( 'Response::httpCodes(). Will be removed in 4.0.0' ) ; if ( empty ( $ code ) ) { return $ this -> _statusCodes ; } if ( is_array ( $ code ) ) { $ codes = array_keys ( $ code ) ; $ min = min ( $ codes ) ; if ( ! is_int ( $ min ) || $ min < 100 || max ( $ codes ) > 999 ) { throw new InvalidArgumentException ( 'Invalid status code' ) ; } $ this -> _statusCodes = $ code + $ this -> _statusCodes ; return true ; } if ( ! isset ( $ this -> _statusCodes [ $ code ] ) ) { return null ; } return [ $ code => $ this -> _statusCodes [ $ code ] ] ; }
docstring: Queries & sets valid HTTP response codes & messages.
  
  @param int|array|null $code If $code is an integer, then the corresponding code/message is
  returned if it exists, null if it does not exist. If $code is an array, then the
  keys are used as codes and the values as messages to add to the default HTTP
  codes. The codes must be integers greater than 99 and less than 1000. Keep in
  mind that the HTTP specification outlines that status codes begin with a digit
  between 1 and 5, which defines the class of response the client is to expect.
  Example:
  
  httpCodes(404); // returns [404 => 'Not Found']
  
  httpCodes([
  381 => 'Unicorn Moved',
  555 => 'Unexpected Minotaur'
  ]); // sets these new values, and returns true
  
  httpCodes([
  0 => 'Nothing Here',
  -1 => 'Reverse Infinity',
  12345 => 'Universal Password',
  'Hello' => 'World'
  ]); // throws an exception due to invalid codes
  
  For more on HTTP status codes see: http://www.w3.org/Protocols/rfc2616/rfc2616-sec6.html#sec6.1
  
  @return mixed Associative array of the HTTP codes as keys, and the message
  strings as values, or null of the given $code does not exist.
  @throws \InvalidArgumentException If an attempt is made to add an invalid status code
  @deprecated 3.4.0 Will be removed in 4.0.0
docstring_tokens: Queries & sets valid HTTP response codes & messages .