Why put %'Author'% in a percentage?

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Michael R.2015-10-01 16:29:22

PHP

Michael R., 2015-10-01 16:29:22

Hello! There is a variable (or how to call it) %'Author'% , why is it placed in %%, why can't it be made as a variable in $? Does %% have its own functions, for example, counting the number of characters in the displayed author name?

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bears, 2015-10-01
@Mike_Ro

Such "variables" are used in configs (for example, yaml) or in the text, for example, if you want to dynamically substitute some piece of text, for example, %date% is replaced with the current date.

A

Alexey Skobkin, 2015-10-03
@skobkin

Perhaps you are dealing with a template engine and a template for it.