试图将php与jade集成

the following is my code.

li(class = "home", class = "<?php if($page == 'home'){echo '.on';} ?>")

i need a result as

<li class="home <?php if($page == 'home'){echo '.on';} ?> "></li>

but its turning out as

<li class="home #{&lt;?php if($page == 'home'){echo '.on';} ?&gt;}"></li>

any one has any suggestions

tried !{} but no luck

fyi: using atom as editor and xampp as server