WordPressでHTTPS設定にしたあとにtoo_many_redirectsになったときの対処法 ref: https://qiita.com/TinyKitten/items/2e77f54cd216ffbbf3bf

file0.php

$_SERVER['HTTPS'] = 'on';
$_ENV['HTTPS'] = 'on';
$_SERVER['HTTP_HOST'] = 'YOUR_BLOG_URL_HERE';
$_SERVER['SERVER_NAME'] = 'YOUR_BLOG_URL_HERE';
$_ENV['HTTP_HOST'] = 'YOUR_BLOG_URL_HERE';
$_ENV['SERVER_NAME'] = 'YOUR_BLOG_URL_HERE';

file1.php

/** Absolute path to the WordPress directory. */
if ( !defined('ABSPATH') )
        define('ABSPATH', dirname(__FILE__) . '/');

/** Sets up WordPress vars and included files. */
require_once(ABSPATH . 'wp-settings.php');