[Wordpress] only show post current user

<?php
if ( !function_exists( 'parse_query_useronly' ) ) {
    function parse_query_useronly($wp_query) {
        if (strpos($_SERVER['REQUEST_URI'], '/wp-admin/edit.php') !== false) {
            if (!current_user_can('update_core')) {
                global $current_user;
                $wp_query->set('author', $current_user->id);
            }
        }
    }
    add_filter('parse_query', 'parse_query_useronly');
}
if ( !function_exists( 'users_own_attachments' ) ) {
    function users_own_attachments( $wp_query_obj ) {
        global $current_user, $pagenow;
        if( !in_array( $pagenow, array( 'upload.php', 'admin-ajax.php' ) ) ) {
            return;
        }
        if( !current_user_can('delete_pages') )
            $wp_query_obj->set('author', $current_user->ID );
        return;
    }
    add_action('pre_get_posts','users_own_attachments');
}