Версия языка PHP 7.2 доступна на всех тарифах хостинга cPanel hosting.
Как изменить версию PHP написано в статье Выбор версии PHP.

PHP 7.2 (количество модулей 118): apcu, bcmath, brotli, bz2, calendar, core, ctype, curl, date, dba, dbase, dom, eio, enchant, exif, ffmpeg, fileinfo, filter, ftp, gd, gender, geoip, geos, gettext, gmagick, gmp, gnupg, grpc, hash, http, iconv, igbinary, imagick, imap, inotify, interbase, intl, ioncube_loader, json, ldap, libxml, luasandbox, lzf, mailparse, mbstring, memcache, memcached, mongodb, mysqli, mysqlnd, nd_mysqli, nd_pdo_mysql, newrelic, oauth, oci8, odbc, opcache, openssl, pcntl, pcre, pdf, pdo, pdo_dblib, pdo_firebird, pdo_mysql, pdo_oci, pdo_odbc, pdo_pgsql, pdo_sqlite, pdo_sqlsrv, pgsql, phalcon3, phar, posix, propro, pspell, raphf, readline, redis, reflection, session, shmop, simplexml, snmp, soap, sockets, sodium, sourceguardian, spl, sqlite3, sqlsrv, ssh2, standard, stats, swoole, sysvmsg, sysvsem, sysvshm, tideways, tidy, timezonedb, tokenizer, trader, uploadprogress, uuid, vips, wddx, xdebug, xml, xmlreader, xmlrpc, xmlwriter, xsl, yaf, yaml, zip, zlib, zmq