Software used on our WordPress platform:

MySQL 5.7

PHP: 7.3, 7.2, 7.1, 7.0

PHP modules: APCu, bcmath, cgi-fcgi, core, ctype, curl, date, dom, fileinfo, filter, hash, iconv, intl, json, libxml, mbstring, mcrypt, mysqli, openssl, pcre, PDO, pdo_mysql, phar, readline, reflection, session, SimpleXML, SPL, standard, tokenizer, xml, xmlreader, xmlwriter, Zend OpCache, zip, zlib.