Since posting AdSense, now you can click them on your site, the 2 custom PHP functions I wrote initially, turned into a few more than just the 2 as I tested and refined each, over the last few days.
Still, these functions allow me (the webmaster) to view AdSense ads on my websites with the google_ad_client id set to "ca-test", simply based on a special cookie that I set for myself.
I have also written this collection of custom PHP functions assuming every other webmaster reading this someday, is like me, i.e. the webmaster is managing many domains on a web server and "including" it on each site from just one place.
For this reason alone, I have kept the domain specific & cookie setting information separate and off this file. Information like that is set and managed inside the individual (domain) cookie setting files.
I have also considered people who may want to extend/add to the collection. This is why the main function below is named adsense_content_code() where "content" is for Google AdSense for Content code. In case you decide to write one to handle Google AdSense for Search for example, you could simply create a new, similar function and name it adsense_search_code()!
Similarly all private functions that are unique to each type of ad code, contain the description in their function names e.g. note the "content" in _adsense_content_default_values().
Enough with the background "overview". Here's the complete script. If you decide to use/test it, copy and paste the example code and save it to a PHP file and filename it functions-adsense.inc.php. I have mine saved to a central location on my web server, say... /home/jds/shared/functions/functions-adsense.inc.php.
FILE: functions-adsense.inc.php
PHP Code Example:
<?php
/**
* Functions used to dynamically generate AdSense javascript code.
*
* Functions used to dynamically generate AdSense for Content
* javascript code.
*
* @author J de Silva <giddomains@gmail.com>
* @copyright Copyright © 2005, J de Silva
* @link http://www.gidnetwork.com/b-13.html AdSense ad_client id dynamically
*/
// ---------------------------------------------
// Set the following variables where appropriate
// ---------------------------------------------
// The default value for "google_ad_client".
$_adsense['google_ad_client'] = 'pub-0000000000000000';
// A simple password. Required to access the cookie setting web page.
$_adsense['password_to_set_cookie'] = 'P4Ssw0Rd';
// The NAME of the cookie that a siteowner sets for him/herself.
$_adsense['siteowner_cookiename'] = 'no_adsense_for_me';
// ---------------------------------------------
/********** NOTHING TO EDIT BELOW **********/
/*******************************************/
function adsense_content_code( $v )
{
// loads an array of DEFAULT values as backup.
$dvs = _adsense_content_default_values();
$v = array_merge( $dvs, $v );
// this is where "google_ad_client" id is reset to "ca-test" if the siteowner's cookie is found.
_adsense_reset_client_id_for_siteowner( $v );
unset( $dvs );
return
"<script type="text/javascript"><!--\n" .
_adsense_adtest_line( $v['ad_client'] ) .
"google_ad_client = "$v[ad_client]";\n" .
_adsense_alternate_line( $v ) .
"google_ad_width = $v[ad_width];\n" .
"google_ad_height = $v[ad_height];\n" .
"google_ad_format = "$v[ad_format]";\n" .
"google_ad_channel ="$v[ad_channel]";\n" .
"google_color_border = "$v[color_border]";\n" .
"google_color_bg = "$v[color_bg]";\n" .
"google_color_link = "$v[color_link]";\n" .
"google_color_url = "$v[color_url]";\n" .
"google_color_text = "$v[color_text]";\n" .
"//--></script>\n" .
"<script type="text/javascript"\n" .
" src="http://pagead2.googlesyndication.com/pagead/show_ads.js">\n" .
"</script>\n" ;
}
/********** PRIVATE FUNCTIONS **********/
/***************************************/
function _adsense_adtest_line( &$ad_client_id )
{
if( $ad_client_id === 'ca-test' )
return( "google_adtest = "on";\n" );
return( null );
}
function _adsense_alternate_line( &$v )
{
if( isset($v['alternate_color']) )
return( "google_alternate_color = "{$v['alternate_color']}";\n" );
if( isset($v['alternate_ad_url']) )
return( "google_alternate_ad_url = "{$v['alternate_ad_url']}";\n" );
return null;
}
function _adsense_content_default_values()
{
// verify that the $_adsense['google_ad_client'] variable above, was set.
$verified = false;
if( isset($GLOBALS['_adsense']['google_ad_client']) )
if( $GLOBALS['_adsense']['google_ad_client'] )
if( $GLOBALS['_adsense']['google_ad_client'] !== 'pub-0000000000000000' )
$verified = true;
if( !$verified )
trigger_error( "The default AdSense GOOGLE_AD_CLIENT id was not set.", E_USER_ERROR );
return
array(
'ad_client' => $GLOBALS['_adsense']['google_ad_client'],
'ad_width' => 468,
'ad_height' => 60,
'ad_format' => '468x60_as',
'ad_type' => 'text',
'ad_channel' => null,
'color_border' => '336699',
'color_bg' => 'FFFFFF',
'color_link' => '0000FF',
'color_url' => '008000',
'color_text' => '000000'
);
}
function _adsense_reset_client_id_for_siteowner( &$v )
{
if( isset( $_COOKIE[ $GLOBALS['_adsense']['siteowner_cookiename'] ] ) )
{
$v['ad_client'] = 'ca-test';
$v['ad_channel'] = null;
}
}
?>
In case you decide to try this out...
The first thing you need to do is to edit the following values where it asks you to:
PHP Code Example:
<?php
//...
// ---------------------------------------------
// Set the following variables where appropriate
// ---------------------------------------------
// The default value for "google_ad_client".
$_adsense['google_ad_client'] = 'pub-0000000000000000';
// A simple password. Required to access the cookie setting web page.
$_adsense['password_to_set_cookie'] = 'P4Ssw0Rd';
// The NAME of the cookie that a siteowner sets for him/herself.
$_adsense['siteowner_cookiename'] = 'no_adsense_for_me';
// ---------------------------------------------
// ...
?>
The $_adsense['password_to_set_cookie'] variable and value, is used to access the cookie setting page for each domain that you manage. It's not the most secure way to limit access to a private page such as this but I figured it's better than nothing - so extend it into something more robust if that is what you'd prefer to do.
Example use
There is only one function that i need to use to generate the AdSense for Content javascript codes inside any web page or script i.e. the adsense_content_code() function.
Let's say I wanted to insert one 728x90 (text & image) and another 250x250 (text only) AdSense ad unit in my index.php page here. This is probably how I am going to do it:
PHP Code Example:
<?php
/**
* FILENAME: index.php
*/
// existing lines of script to generate the page content...
// include the adsense functions file
include_once( '/home/jds/shared/functions/functions-adsense.inc.php' );
// the 728x90 AdSense ad-unit
$as[0]['ad_client'] = 'pub-0000000000000000'; // optional
$as[0]['ad_width'] = 728;
$as[0]['ad_height'] = 90;
$as[0]['ad_format'] = "728x90_as";
$as[0]['ad_type'] = "text_image";
$as[0]['alternate_ad_url'] = "http://www.gidnetwork.com/alt-728x90.html";
echo adsense_content_code( $as[0] );
// some other existing code...
// the 250x250 AdSense ad-unit, this time with channel info too
$as[1]['ad_client'] = 'pub-0000000000000000'; // optional
$as[1]['ad_channel'] = '0000000000';
$as[1]['ad_width'] = 250;
$as[1]['ad_height'] = 250;
$as[1]['ad_format'] = "250x250_as";
$as[1]['ad_type'] = "text";
$as[1]['alternate_ad_url'] = "http://www.gidnetwork.com/alt-250x250.html";
echo adsense_content_code( $as[1] );
// the rest of my web page / script...
?>
If you decide to use these functions, please remember this one very important thing. You must always set the following 3 values in an array before submitting it to the adsense_content_code() function:
ad_width | ad_height | ad_format
everything else is optional.
