Use HTTPS for some sites of network

php

<?php
/**
* Use HTTPS for some sites of network
*/

function rsssl_check_protocol_multisite($url, $scheme, $orig_scheme){

  if(get_current_blog_id() == 23){

    $url = str_replace("http://", "https://", $url);

  }

  return $url;
}

add_filter("set_url_scheme", "rsssl_check_protocol_multisite", 20, 3 );


function forect_https_redirect(){

  if(get_current_blog_id() != 23){
    return;
  }

  $use_sts = true;
  if ($use_sts && isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] != 'off') {
      header('Strict-Transport-Security: max-age=31536000');
  } elseif ($use_sts) {
      header('Location: https://'.$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI'], true, 301);
      die();
  }
}
add_action('ínit', 'forect_https_redirect');