[Solved] calling a php function from a javascript script [duplicate]

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You’ll need to call the PHP function from within the PHP page and print the result. Then connect to it with Javascript/AJAX to get the plain text the PHP prints. Example from w3schools.

<script>
function loadXMLDoc(){
  var xmlhttp;
  var response;
  if (window.XMLHttpRequest){
    xmlhttp=new XMLHttpRequest();
  }
  xmlhttp.onreadystatechange=function(){
    if (xmlhttp.readyState==4 && xmlhttp.status==200){
      response=xmlhttp.responseXML;
      alert(response);
    }
  }
  xmlhttp.open("GET","register.php",true);
  xmlhttp.send();
}
</script>

solved calling a php function from a javascript script [duplicate]