¿Como inserto el codigo de ADS en una variale PHP?

[alealvaro]

Si usas comillas simples?

Código PHP:

<?php
$ads300 = '
<script type="text/javascript"><!--
google_ad_client = "ca-pub-3XXXXXXXXXXXXXX";
google_ad_slot = "0000000000";
google_ad_width = 300;
google_ad_height = 250;
//-->
</script>
<script type="text/javascript"
src="http://pagead2.googlesyndication.com/pagead/show_ads.js">
</script>';
 
$ads338='
<script type="text/javascript"><!--
google_ad_client = "ca-pub-3XXXXXXXXXXXXXX";
google_ad_slot = "0000000000";
google_ad_width = 336;
google_ad_height = 280;
//-->
</script>
<script type="text/javascript"
src="http://pagead2.googlesyndication.com/pagead/show_ads.js">
</script>';
?>