带有集成功能的php模板引擎

I want to make a php template engine with integrated functions. e.g.:

<html>
<head></head>
<body>
<tmp:if {-time-}<"12AM">Good Morning<tmp:else>Good Afternoon</tmp:if>
</body>
</html>

Or something like that. I have alredy made a function that replace {-VAR-} with relative db value but i need some html "functions".

Can you help me?

I would suggest looking into existing templating engines before making your own.

I use Twig

Smarty is also popular choice.

Don't think you need to reinvent the wheel.

You can extend these existing systems to fit your needs.