error.php

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<?php

$type = elgg_extract('type', $vars);
$params = elgg_extract('params', $vars, []);

if (elgg_view_exists("errors/$type")) {
    $title = elgg_echo("error:$type:title");
    if ($title == "error:$type:title") {
        // use default if there is no title for this error type
        $title = elgg_echo("error:default:title");
    }
    
    $content = elgg_view("errors/$type", $params);
} else {
    $title = elgg_echo("error:default:title");
    $content = elgg_view("errors/default", $params);
}

$httpCodes = array(
    '400' => 'Bad Request',
    '401' => 'Unauthorized',
    '403' => 'Forbidden',
    '404' => 'Not Found',
    '407' => 'Proxy Authentication Required',
    '500' => 'Internal Server Error',
    '503' => 'Service Unavailable',
);

if (isset($httpCodes[$type])) {
    elgg_set_http_header("HTTP/1.1 $type {$httpCodes[$type]}");
}

$layout = elgg_in_context('admin') && elgg_is_admin_logged_in() ? 'admin' : 'error';

$body = elgg_view_layout($layout, array(
    'title' => $title,
    'content' => $content,
));
echo elgg_view_page($title, $body, $layout);