force-plugins.php

<?php

/**
 * Force enable a plugin.
 *
 * @param  array $plugins
 *
 * @return array
 */
add_filter( 'option_active_plugins', function ( $plugins ) {
  return array_merge( $plugins, [
    'akismet/akismet.php'
  ] );
} );

/**
 * Force network enable a pugin.
 *
 * @param  array $plugins
 *
 * @return array
 */
add_filter( 'site_option_active_sitewide_plugins', function ( $plugins ) {
  return array_merge( $plugins, [
    'akismet/akismet.php'
  ] );
} );