Java脚本在字符串中输入脚本

Question

我正在尝试将来自JS页面的信息回显到要发送的SMS中，这是我目前的

 $text = urlencode("$slfirstname $sllastname $slcustom1. Has activated a SOS Panic Button");

如何运行我尝试过以下操作的脚本但是给了我错误

 $text = urlencode("$slfirstname $sllastname $slcustom1. Has activated a SOS Panic Button <script src="geo.js"></script>");

我想得到的最终结果是让PHP和JS中的Longs和Lats显示在$ text部分

这是回显同一页面信息的PHP代码

 echo 'Latitude: '.$lat.' Longitude: '.$long.'<br />';

这是JS代码

// this calls the php script with the data we have collected from the geolocation lookup
function GEOajax(url) {
 xmlHttp.open("GET", url, true);
 xmlHttp.onreadystatechange = updatePage;
 xmlHttp.send(null);
}

// this reads the response from the php script and updates the page with it's output
function updatePage() {
 if (xmlHttp.readyState == 4) {
  var response = xmlHttp.responseText;
  document.getElementById("geo").innerHTML = '' + response;
 }
}