PHP Auto Generate Status Header: function

PHP Function to Auto Generate Status Header

This is from the CodeIgnitor Common Functions Library. It is very useful:

// ------------------------------------------------------------------------

/**
 * Set HTTP Status Header
 *
 * @access public
 * @param int  the status code
 * @param string
 * @return void
 */
if ( ! function_exists('set_status_header'))
{
 function set_status_header($code = 200, $text = '')
 {
  $stati = array(
       200 => 'OK',
       201 => 'Created',
       202 => 'Accepted',
       203 => 'Non-Authoritative Information',
       204 => 'No Content',
       205 => 'Reset Content',
       206 => 'Partial Content',

       300 => 'Multiple Choices',
       301 => 'Moved Permanently',
       302 => 'Found',
       304 => 'Not Modified',
       305 => 'Use Proxy',
       307 => 'Temporary Redirect',

       400 => 'Bad Request',
       401 => 'Unauthorized',
       403 => 'Forbidden',
       404 => 'Not Found',
       405 => 'Method Not Allowed',
       406 => 'Not Acceptable',
       407 => 'Proxy Authentication Required',
       408 => 'Request Timeout',
       409 => 'Conflict',
       410 => 'Gone',
       411 => 'Length Required',
       412 => 'Precondition Failed',
       413 => 'Request Entity Too Large',
       414 => 'Request-URI Too Long',
       415 => 'Unsupported Media Type',
       416 => 'Requested Range Not Satisfiable',
       417 => 'Expectation Failed',

       500 => 'Internal Server Error',
       501 => 'Not Implemented',
       502 => 'Bad Gateway',
       503 => 'Service Unavailable',
       504 => 'Gateway Timeout',
       505 => 'HTTP Version Not Supported'
      );

  if ($code == '' OR ! is_numeric($code))
  {
   show_error('Status codes must be numeric', 500);
  }

  if (isset($stati[$code]) AND $text == '')
  {
   $text = $stati[$code];
  }

  if ($text == '')
  {
   show_error('No status text available. Please check your status code number or supply your own message text.', 500);
  }

  $server_protocol = (isset($_SERVER['SERVER_PROTOCOL'])) ? $_SERVER['SERVER_PROTOCOL'] : FALSE;

  if (substr(php_sapi_name(), 0, 3) == 'cgi')
  {
   header("Status: {$code} {$text}", TRUE);
  }
  elseif ($server_protocol == 'HTTP/1.1' OR $server_protocol == 'HTTP/1.0')
  {
   header($server_protocol." {$code} {$text}", TRUE, $code);
  }
  else
  {
   header("HTTP/1.1 {$code} {$text}", TRUE, $code);
  }
 }
}

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