How can we call Forumdisplay title in php ?

[Mean]

For example, in this forum; there is a

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above. I want to make these in forumdisplay code.

<meta name="keywords" content="Forumdisplaytitle" />
<meta name="description" content="forumdisplaytitle, bla, bla" />

So How can I call Forumdisplay name in php ?