Il selettore è il cookie che il componente WPML rilascia denominato _icl_current_language

<?php //Language specific Footer code 
if ($_COOKIE['_icl_current_language'] == "en") {
	echo '
	<script type="text/javascript">
    var _iub = _iub || [];
    _iub.csConfiguration = {
        cookiePolicyId: 921612,
        siteId: 135641,
        lang: "en"
    };
    (function (w, d) {
        var loader = function () { var s = d.createElement("script"), tag = d.getElementsByTagName("script")[0]; s.src = "//cdn.iubenda.com/cookie_solution/iubenda_cs.js"; tag.parentNode.insertBefore(s, tag); };
        if (w.addEventListener) { w.addEventListener("load", loader, false); } else if (w.attachEvent) { w.attachEvent("onload", loader); } else { w.onload = loader; }
    })(window, document);
</script>

	';
	
		}  elseif ($_COOKIE['_icl_current_language'] == "fr") {
	  echo '
<script type="text/javascript">
    var _iub = _iub || [];
    _iub.csConfiguration = {
        cookiePolicyId: 984961,
        siteId: 352876,
        lang: "fr"
    };
    (function (w, d) {
        var loader = function () { var s = d.createElement("script"), tag = d.getElementsByTagName("script")[0]; s.src = "//cdn.iubenda.com/cookie_solution/iubenda_cs.js"; tag.parentNode.insertBefore(s, tag); };
        if (w.addEventListener) { w.addEventListener("load", loader, false); } else if (w.attachEvent) { w.attachEvent("onload", loader); } else { w.onload = loader; }
    })(window, document);
</script>
	  ';
	  } else { 
		  echo '
		  <script type="text/javascript">
    var _iub = _iub || [];
    _iub.csConfiguration = {
        cookiePolicyId: 756162,
        siteId: 352862,
        lang: "it"
    };
    (function (w, d) {
        var loader = function () { var s = d.createElement("script"), tag = d.getElementsByTagName("script")[0]; s.src = "//cdn.iubenda.com/cookie_solution/iubenda_cs.js"; tag.parentNode.insertBefore(s, tag); };
        if (w.addEventListener) { w.addEventListener("load", loader, false); } else if (w.attachEvent) { w.attachEvent("onload", loader); } else { w.onload = loader; }
    })(window, document);
</script>
		  ';
		  
}
 ?>