With the release of plesk lsphp binary packages in plesk offical repository, this solution is now deprecated.

For Apache, plesk-php52/plesk-php53/plesk-php54/plesk-php55/plesk-php56 have been installed by Plesk. You would then need to also install lsphp52,lsphp53,lsphp54,lsphp55,lsphp56,lsphp70for LSWS accordingly. A group installation command do them for you.

yum groupinstall lsphp-all

or update all packages by running:

yum groupupdate lsphp-all

LSPHP packages can also be installed separately one by one(refer this wiki) , though it is not recommended since it takes longer time for manual installation.