Can I run Google Analytics tracking code within a PHP web service script...???

<?php
# Google Analytics E-Commerce Tracking Code
if(!$sandbox && $google_analytics_ecommerce && strtolower($payment_status) == 'completed')
{
	$js_output = '<script type="text/javascript">
			var gaJsHost = (("https:" == document.location.protocol) ? "https://ssl." : "http://www.");
			document.write(unescape("%3Cscript src=\'" + gaJsHost + "google-analytics.com/ga.js\' type=\'text/javascript\'%3E%3C/script%3E"));
			</script>
			
			<script type="text/javascript">
			  var pageTracker = _gat._getTracker("' . $google_analytics_id . '");
			  pageTracker._trackPageview();
			  pageTracker._addTrans(
				"' . $invoice . '",           // Order ID
				"",                            // Affiliation
				"' . $mc_gross . '",           // Total
				"' . $tax . '",                // Tax
				"' . $shipping . '",           // Shipping
				"' . $address_city . '",       // City
				"' . $address_state . '",      // State
				"' . $address_country . '"     // Country
			  );';
		
	foreach($cart_items as $cart_item)
	{
		$js_output .= 'pageTracker._addItem(
				"' . $invoice . '",                                     // Order ID
				"' . $cart_item['item_number'] . '",                     // SKU
				"' . $cart_item['item_name'] . '",                       // Product Name 
				"",                            							 // Category
				"' . $cart_item['mc_gross'] . '",                        // Price
				"' . $cart_item['quantity'] . '"                         // Quantity
			  );';		
	}
			
	$js_output .= 'pageTracker._trackTrans();
			</script>';
			
	echo $js_output . chr(10) . chr(10);
}
 
$js_output_email = isset($js_output) ? $js_output : '';
 
# Google Analytics AdWords Conversion Tracking
if(!$sandbox && $google_adwords_conversions && strtolower($payment_status) == 'completed')
{
	$js_output = '<script language="JavaScript" type="text/javascript">
					<!--
					var google_conversion_id = ' . $google_adwords_conversion_id . ';
					var google_conversion_language = "en_US";
					var google_conversion_format = "3";
					var google_conversion_color = "ffffff";
					var google_conversion_label = "XNx1CM7GWBCmxJr2Aw";
					if (' . number_format($mc_gross,1) . ') {
					  var google_conversion_value = ' . number_format($mc_gross,1) . ';
					}
					//-->
					</script>
					<script language="JavaScript" src="https://www.googleadservices.com/pagead/conversion.js">
					</script>
					<noscript>
					<img height="1" width="1" border="0" src="https://www.googleadservices.com/pagead/conversion/' . $google_adwords_conversion_id . '/?value=' . number_format($mc_gross,1) . '&amp;label=XNx1CM7GWBCmxJr2Aw&amp;guid=ON&amp;script=0"/>
					</noscript>';
					
	echo $js_output;	
}
 
# Temp to see if this get reached
if(isset($js_output))
{
	$js_output_email .= $js_output;
	$mail -> Subject  =  'USBSwiper PayPal IPN : Google Analytics Code Ran';
	$mail -> Body =  $js_output_email;
	$mail -> AddAddress($admin_email_address, $admin_name);
	$mail -> Send();
	$mail -> ClearAddresses();	
}
?>

                                  

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