Reload/Update include PHP file in jquery on wordpress plugin - php

Question

This issue is resolved. My friend helped me here is the working code:
<script type="text/javascript">
setInterval(jQuery.get("<?php
$url = plugin_dir_url( $file );
echo plugins_url( 'update.php' , __FILE__ ); ?>", function(responseData) {
jQuery("#cur_pos").html(responseData);
}), 1000 * 300);
</script>
<div id="cur_pos">
</div>
I want to reload a php file every so often to update a widget im making for wordpress.
My code thus for ive hacked together doesn't seem to work. it will work when i use the simple include but wont refresh of course. What am I missing?
<script type="Javascript">
// reload php
if(!jQuery && $) {
var jQuery = $;
}
function updatePos(){
UpdateInSeconds = 30;
jQuery('#cur_pos').load('<?php
$url = plugin_dir_url( $file );
echo plugins_url( 'update.php' , __FILE__ ); ?>');
setTimeout("updatePos();",UpdateInSeconds*1000) ;
}
jQuery(document).ready(function(){
updatePos();
});
</script>
<div id="cur_pos">
</div>
This is the output:
<script type="Javascript">
// reload php
if(!jQuery && $) {
var jQuery = $;
}
function updatePos(){
UpdateInSeconds = 30;
jQuery('#cur_pos').load('http://www.thepuzzycat.com/wp-content/plugins/ArduinoStats/update.php');
setTimeout("updatePos();",UpdateInSeconds*1000) ;
}
jQuery(document).ready(function(){
updatePos();
});
</script>
<div id="cur_pos">
</div>

Answer 1

setInterval(jQuery.get("http://www.thepuzzycat.com/wp-content/plugins/ArduinoStats/update.php", function(responseData) {
jQuery("#cur_pos").html(responseData);
}), 1000 * 300);
It's not the best solution for performance and other aspects, but it does work and it's better than using a recursive function.