php - if css div class exists in body, add stylesheet to head

Question

I need to add a stylesheet to my head, if a div class exists in my body.

i.e.

If this exists in my body:

<div class="myclass">...</div>

Add this to my head:

<link rel="stylesheet" href="/css/mystyle.css" type="text/css" media="screen" />

How do I do this with php?

Answer 1

check this url once click

<script type="text/javascript">
$(document).ready(function(){

if($("#myclass").size()>0){
        if (document.createStyleSheet){
            document.createStyleSheet('style.css');
        }
        else {
            $("head").append($("<link rel='stylesheet' href='style.css'   type='text/css' media='screen' />"));
        }
    }
});
</script>