How can i get javascript variable to store in php?

Question

i see one example in which they pass javascript variable into php by like this:

<html>
<head>
<script type="text/javascript">
    var q = "hello";
    <?php
      $ff ="<script>document.write(q1)</script>";
   ?>
</script>
</head>
<body>
<?php echo $ff; ?>
<input type="hidden" value="nis" id="val">
</body>
</html>

i try one exaple like this:

<html>
<head>
<script type="text/javascript">
    var q = $("#val").val();
    <?php
      $ff ="<script>document.write(q)</script>";
   ?>
</script>
</head>
<body>
<?php echo $ff; ?>
<input type="hidden" value="nis" id="val">
</body>
</html>

but its not give output. there is any solution for this problem? how can i get value in php variable? i want "nis" in $ff variable.

score 0 · Answer 1 · edited May 23 '17 at 10:28

0

You can not pass Javascript variable to PHP variable as PHP is server side language and Javascript is client side. Please check this answer

How to pass JavaScript variables to PHP?

What is the difference between client-side and server-side programming?

edited May 23 '17 at 10:28

Community

1
1

answered Jul 19 '16 at 11:16

Saurabh

776
1
5
15

there is any solution for passing javascript value on same page? – yash Jul 19 '16 at 11:19
As far as I know,on current page it is not possible. – Saurabh Jul 19 '16 at 11:22
You can self submit the form which will result in page refresh and then you can store the value in PHP variable – Saurabh Jul 19 '16 at 11:23
You can also make use of AJAX for this. – Saurabh Jul 19 '16 at 11:35
can you give ajax solution for this? – yash Jul 19 '16 at 11:44
are you processing this values and doing some operations on it? It depends on what your are trying to achieve as whether to make an AJAX request or not – Saurabh Jul 19 '16 at 11:55

score -1 · Answer 2 · answered Jul 19 '16 at 11:18

-1

<script>
var abcd = "xyz";
</script>

<?php
echo "<script>document.write(abcd);</script>";
?>

answered Jul 19 '16 at 11:18

black_pottery_beauty

861
8
17

it will echo but when you put it into variable and do calculations it will fail. – Abhishek Gurjar Jul 19 '16 at 11:25
Then pass javascript variable using ajax calll to the respective we Page in php and do whatever you wish.alternative – black_pottery_beauty Jul 19 '16 at 11:28
best way is to use of ajax and get method. – Abhishek Gurjar Jul 19 '16 at 11:30

score -1 · Accepted Answer · answered Jul 19 '16 at 13:05

Pl. try this code   
 <html>
    <head>
    <script type="text/javascript">
       var q=document.getElementById("val").value;
        //document.write(q);

    </script>
    </head>
    <body>



    <input type="hidden" value="nis" id="val"></body>

    <script type="text/javascript">
       var q=document.getElementById("val").value;
        document.write(q);

    </script>
     <?php
          echo $ff="<script type='text/javascript'>
                    document.write(q)</script>";
       ?>
    <?php echo $ff; ?>
    </html>

How can i get javascript variable to store in php?

3 Answers3