add conversion identifiers to the Google Ads pixel output

wpm_google_ads_conversion_identifiers.php

<?php

/*
* Since version 1.8.2 of the plugin.
* 
* This filter will add aditional conversion ID and label pairs to the output 
* of the Google Ads pixel.
* 
* It will add the output to every page with the Google Ads remarketing pixel, 
* including the purchase confirmation page.
*
* Place the following code into your functions.php and replace the placeholders.
*
* It will only work if the main conversion ID and conversion label are set 
* within the plugin (which activates the Google Ads conversion tracking in 
* the first place).
*/


add_filter('wpm_google_ads_conversion_identifiers', function ($conversion_identifiers) {
    
    $conversion_identifiers['CONVERSION_ID_2'] = 'CONVERSION_LABEL_2';
    $conversion_identifiers['CONVERSION_ID_3'] = 'CONVERSION_LABEL_3';
    return $conversion_identifiers;
});