Call PHP function inside JavaScript inside echo

Question

I have read the other similar questions, but not found the answer, so here it is:

<?php     
function load($page) {     
    echo "page: ".$page;
}

echo "
<script type='text/javascript'>
  var page = 0;
  window.addEventListener(...., function(){
    var x = .....
    ......
    if(x = ....)
    {
      page = page + 1;
      var runQuery = '<?php load(page); ?>'
    }
  })
</script>  
";    
?>

The problem is that <?php load(page); ?> is not executed. If I write load(page); outside the echo, it works. Can anyone help me ?

Possible duplicate of [What is the difference between client-side and server-side programming?](https://stackoverflow.com/questions/13840429/what-is-the-difference-between-client-side-and-server-side-programming) — user3942918, Jul 02 '18 at 17:53
You cannot add php code inside javascript, only inside html tags — Elon Musk, Jul 02 '18 at 17:54
You should solve this using [ajax](https://www.w3schools.com/xml/ajax_intro.asp) — GEPD, Jul 02 '18 at 17:57

score 2 · Answer 1 · answered Jul 02 '18 at 17:55

Change the function to return:

function load($page) { 

    return "page: ".$page;
}

You're executing PHP with the echo so just use the return of load():

echo "
            <script type='text/javascript'>
            var page = 0;
            window.addEventListener(...., function(){
                var x = .....
                ......
                if(x = ....)
                {
                    page = page + 1;
                    var runQuery = '" . load($page) . "'
                }
            })
            </script>  
";

thank for the fast reply but still does not work. Every time window.addEventListener() is called, i would like to pass the value page to the load function. — zepifiwe, Jul 02 '18 at 18:05

Call PHP function inside JavaScript inside echo

1 Answers1