#Script by bloghash.com
function disp_google_ads() {
         $url_cur = $_SERVER['REQUEST_URI'];
         $url_cur_len = strlen($url_cur);

#
# You will have to put a \ (backslash) in front of every quote (") like I 
# have done (excluding the first and last quote), so that 
# PHP can process the text
#


# AdSense Code for the main page!
//Replace with your code (and put \ in front of every quote (excluding the first and last quote))
$ad = "<script type=\"text/javascript\"><!--
google_ad_client = \"pub-1778120429997394\";
google_ad_width = 160;
google_ad_height = 600;
google_ad_format = \"160x600_as\";
google_ad_type = \"text_image\";
//2006-11-07: hash_sidebar_N
google_ad_channel = \"9430101036\";
google_color_border = \"FFFFFF\";
google_color_bg = \"FFFFFF\";
google_color_link = \"9BBB38\";
google_color_text = \"000000\";
google_color_url = \"E58712\";
//--></script>
<script type=\"text/javascript\"
  src=\"http://pagead2.googlesyndication.com/pagead/show_ads.js\">
</script>";

# AdSense Code for a single page!
//Replace with your code (and put \ in front of every quote (excluding the first and last quote))
$ad_1 = "<script type=\"text/javascript\"><!--
google_ad_client = \"pub-1778120429997394\";
google_ad_width = 120;
google_ad_height = 240;
google_ad_format = \"120x240_as\";
google_ad_type = \"text_image\";
//2006-11-07: hash_sidebar_1
google_ad_channel = \"1611621764\";
google_color_border = \"FFFFFF\";
google_color_bg = \"FFFFFF\";
google_color_link = \"9BBB38\";
google_color_text = \"000000\";
google_color_url = \"E58712\";
//--></script>
<script type=\"text/javascript\"
  src=\"http://pagead2.googlesyndication.com/pagead/show_ads.js\">
</script>";

if ($url_cur_len < 2) {
# Remove or add more lines as per your requirement
# Three lines do display three ads. Add or remove, as you like to.
# Remove all the three lines to display nothing!
echo "$ad\n";
echo "$ad\n";
echo "$ad\n";
} else { 
        #Displaying just one ad. Add more lines, or remove to display nothing!
        echo $ad_1;
         }
}