rawphrase in custom php file

[aminp30]

Hi
I created php page in vb 4.2.1
in my php code I used html codes too and I need add vb:rawphrase in it.but it doesn't work.
what should I do?
this is example code:

<table>
<thead><tr><th colspan="2">{vb:rawphrase question_text}</th><th>{vb:rawphrase choices}</th><th>{vb:rawphrase score}</th></tr></thead>
<tfoot><tr><td colspan="4"><div id="paging"><input type="submit" value="{vb:rawphrase submit_question}"></div></td></tr></tfoot>