Update multiple values in all posts/pages by editing a single file or mask?

I intend to reveal various info regarding some solutions on my internet site. These worths transform really typically and also I can not upgrade the messages by hand:

I require to be able to modify the ever before altering worths within a file/ or mask create there are thousands of them.

In every wordpress article I intend to utilize a shortcode or something like that to reveal
” service_a_features”
” service_a_time” at the offered setting within the message.

Just how could I achieve that?

Prior to WordPress I simply made use of a data called “update.php” in which I had actually specified variables. I after that consisted of the update.php in all of my web pages and also made use of resemble $service_a_price to reveal the the worth.

I require to do this with thousands of personalized information areas. Just how can I accomplish my objective?