function drupal_send_headers

Sends the HTTP response headers that were previously set, adding defaults.

Headers are set in drupal_add_http_header(). Default headers are not set if they have been replaced or unset using drupal_add_http_header().

Parameters

array $default_headers: (optional) An array of headers as name/value pairs.

bool $only_default: (optional) If TRUE and headers have already been sent, send only the specified headers.

File

includes/bootstrap.inc, line 1536

Code

function drupal_send_headers($default_headers = array(), $only_default = FALSE) {
    $headers_sent =& drupal_static(__FUNCTION__, FALSE);
    $headers = drupal_get_http_header();
    if ($only_default && $headers_sent) {
        $headers = array();
    }
    $headers_sent = TRUE;
    $header_names = _drupal_set_preferred_header_name();
    foreach ($default_headers as $name => $value) {
        $name_lower = strtolower($name);
        if (!isset($headers[$name_lower])) {
            $headers[$name_lower] = $value;
            $header_names[$name_lower] = $name;
        }
    }
    foreach ($headers as $name_lower => $value) {
        if ($name_lower == 'status') {
            header($_SERVER['SERVER_PROTOCOL'] . ' ' . $value);
        }
        elseif ($value !== FALSE) {
            header($header_names[$name_lower] . ': ' . $value);
        }
    }
}