I'm new to Openshift. I do not know anything about Git and Openshift. Please guide me to host my PHP application in Openshift.
I have created my domain name in Openshift and added MySQL and phpMyAdmin. And also tell me about database storages in Openshift. I'm using the free plan.
I would start by reading through this overview: https://www.openshift.com/developers/php. You will need to use the command line a little bit to create your application. You should be able to just do:
$ rhc app create MyApp php-5.4
$ rhc cartridge add mysql-5.5 -a MyApp
If you're more specific about what you're hosting I can provide more details. The page I referenced above has tons of tutorials and videos you can watch.
Storage engines listed are: - MySQL - MongoDB - PostgreSQL
It sounds like you want to use MySQL. I don't know what applications you're hosting, but MySQL is a good choice for apps like Wordpress.