<?php

    /*
    after this simple script content of PHP variable $s_wid will be
    JavaScript variable s_wid which is screen.width
    */

    ob_start("stat");
?>

<SCRIPT LANGUAGE="JavaScript">
    var s_wid = 0
    s_wid = screen.width
    document.write(s_wid);
</SCRIPT>

<?php
    $s_wid = ob_get_contents();
    ob_end_flush();
?>