opml.php

<?php
    set_include_path(dirname(__FILE__)."/include".PATH_SEPARATOR.
        get_include_path());

    require_once "autoload.php";
    require_once "functions.php";
    require_once "sessions.php";
    require_once "sanity_check.php";
    require_once "config.php";
    require_once "db.php";
    require_once "db-prefs.php";

    if (!init_plugins()) {
        return;
    }

    $op = $_REQUEST['op'];

    if ($op == "publish") {
        $key = $_REQUEST["key"];
        $pdo = Db::pdo();

        $sth = $pdo->prepare("SELECT owner_uid
				FROM ttrss_access_keys WHERE
				access_key = ? AND feed_id = 'OPML:Publish'");
        $sth->execute([$key]);

        if ($row = $sth->fetch()) {
            $owner_uid = $row['owner_uid'];

            $opml = new Opml($_REQUEST);
            $opml->opml_export("", $owner_uid, true, false);

        } else {
            print "<error>User not found</error>";
        }
    }