<object width="{$width}" height="{$height}">
    <param name="movie" value="http://www.youtube.com/{$path}"></param>
    <param name="allowFullScreen" value="true"></param>
    <param name="allowscriptaccess" value="always"></param>
    <embed src="http://www.youtube.com/{$path}"
           type="application/x-shockwave-flash"
           allowscriptaccess="always"
           allowfullscreen="true"
           width="{$width}" height="{$width}">
    </embed>
</object>

$template_path = 'templates/youtube_vid.tpl';
$template_data = file_get_contents($template_path);

$old = array('{$width}', '{$height}', '{$path}');
$new = array(425, 344, 'v/zuZB2O6orV0&hl=en_US&fs=1&');

echo str_replace($old, $new, $template_data);

https://stackoverflow.com/questions/1827933/mysql-php-store-html-templates-within-the-a-database