Redirect after plugin activation

You should be able to do something like this:

register_activation_hook(__FILE__, 'my_plugin_activate');
add_action('admin_init', 'my_plugin_redirect');

function my_plugin_activate() {
    add_option('my_plugin_do_activation_redirect', true);
}

function my_plugin_redirect() {
    if (get_option('my_plugin_do_activation_redirect', false)) {
        delete_option('my_plugin_do_activation_redirect');
        wp_redirect(MY_PLUGIN_SETTINGS_URL);
    }
}

This will redirect to option page only if that plugin is activated only without using bulk activation mode .

register_activation_hook(__FILE__, 'my_plugin_activate');
add_action('admin_init', 'my_plugin_redirect');

function my_plugin_activate() {
    add_option('my_plugin_do_activation_redirect', true);
}

function my_plugin_redirect() {
    if (get_option('my_plugin_do_activation_redirect', false)) {
        delete_option('my_plugin_do_activation_redirect');
        if(!isset($_GET['activate-multi']))
        {
            wp_redirect("options-general.php?page=your-plugin-option-page");
        }
    }
}

thanks for your code - it´s great, but only has one downside: upon bulk activation of plugins, you also get redirected to your defined redirect page - which might confuse user when deactivating/activating all plugins at once for test/debug reason. I therefore would propose the solution, to add an option to only redirect to your page on FIRST plugin activation:

register_activation_hook(__FILE__, 'my_plugin_activate');
add_action('admin_init', 'my_plugin_redirect');

function my_plugin_activate() {
add_option('myplugin_redirect_on_first_activation', 'true');
}

function my_plugin_redirect() {
    if (get_option(MYPLUGIN_REDIRECT_ON_FIRST_ACTIVATION_KEY) == 'true') {
        update_option(MYPLUGIN_REDIRECT_ON_FIRST_ACTIVATION_KEY, 'false');
        wp_redirect(MY_PLUGIN_SETTINGS_URL);
    }
}