php-php Content Background Management system technical problems

Php

This is a content management system technology, is through the third-party link implementation of the technology, without the use of PHP and JSP and other code, using the following links provided by the developer link to the corresponding backend module to obtain the corresponding data. Does anyone understand this technology? Make up an object that can be linked to a background database by embedding the following code in HTML.
<--
action= "${system.searchaction}"
Value= "${site.id}"
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