Get Javascript Variable value in PHP variable

Question

    var val;
    $('select').on('change', function() {
        alert( this.value );
        val = this.value;
    })
    
    <?php
echo $variable = "<script>document.write(val)</script>";
?>

<select>
    <option value="1">One</option>
    <option value="2">Two</option>
    <option value="3">Three</option>
    <option value="4">four</option>

</select>

I want to get the value of the selected box and save it in a PHP variable. I want to save and echo val variable. Please help

read this http://stackoverflow.com/questions/14354147/call-php-function-in-javascript/14354203#14354203 — Afsar, Mar 02 '17 at 12:22
Read this: [What is the difference between client-side and server-side programming?](http://stackoverflow.com/q/13840429/851432) — Jomoos, Mar 02 '17 at 12:23
Then What should I do for getting selected value in a php variable — Zaid Butt, Mar 02 '17 at 12:38
use ajax for this . php server side so need to use ajax for this condition — Shafiqul Islam, Mar 02 '17 at 12:50
Possible duplicate of [How to pass jQuery variables to PHP variable?](http://stackoverflow.com/questions/5202070/how-to-pass-jquery-variables-to-php-variable) — Zachary Craig, Mar 02 '17 at 12:56

Shafiqul Islam · Accepted Answer · 2017-03-02T14:03:54.210

1

use this code for use variable

  <?php
  session_start();
  echo $_SESSION['php_value'];
  ?>
  <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
  <script>
    function getValue(obj){
    var value = obj.value;
    $.ajax({
        type:"POST",
        url: 'edit.php',
        data: "val="+ value,
        dataType: 'text',
        async: false,
        cache: false,
        success: function ( result )  {
            window.location.reload();
        }
    });
}

</script>

<select onchange="getValue(this)">
<option value="1" <?php if($_SESSION['php_value'] == 1) echo 'selected';?>>One</option>
<option value="2" <?php if($_SESSION['php_value'] == 2) echo 'selected';?>>Two</option>
<option value="3" <?php if($_SESSION['php_value'] == 3) echo 'selected';?>>Three</option>
<option value="4" <?php if($_SESSION['php_value'] == 4) echo 'selected';?>>four</option>

</select>

then create edit.php file

<?php
 session_start();
 $_SESSION['php_value'] = $_REQUEST['val'];
?>

edited Mar 02 '17 at 14:03

answered Mar 02 '17 at 12:58

Shafiqul Islam

5,570
2
34
43

I need a value in a php variable. So where is a variable? help me please – Zaid Butt Mar 02 '17 at 13:56
So great to see three levels of language nesting use the src attribute. – Aluan Haddad Mar 02 '17 at 14:36
JavaScript inside HTML is bad. JavaScript inside HTML inside PHP is worse. – Aluan Haddad Mar 02 '17 at 14:45
i have just answer it , this is not need to structure, when question teller use , he will use it as structure – Shafiqul Islam Mar 02 '17 at 14:57
@ShafiqulIslam Thanks for your help. Your code is working fine. But I have little problem. when I included it in my code it reflects and dropdown is not working. and without it when i select dropdown then a popup appears and ask to reload page – Zaid Butt Mar 03 '17 at 06:57
which problem tell me – Shafiqul Islam Mar 03 '17 at 06:58
Do you understand my problem ? @ShafiqulIslam – Zaid Butt Mar 03 '17 at 06:59
can you give me your code in email or something? i think this is little problem so i can help you – Shafiqul Islam Mar 03 '17 at 07:03
My code is too large, Cant paste it here. I think there is some problem related to ajax included with jquery. – Zaid Butt Mar 03 '17 at 07:04
ok then can you give me your code in email? which secure code remove it and send other code – Shafiqul Islam Mar 03 '17 at 07:05

Toxide82 · Answer 2 · 2017-03-02T12:39:18.397

0

Ajax can do this. Google it, and check out api.jquery.com and look at the ajax functions, .ajax(), .post(), .get(), .load(), etc.

As for your specific question, here is what you would do:

//Javascript file

$.post('my_ajax_receiver.php', 'val=' + $(this).val(), function(response) {
  alert(response);
  });

});

//PHP file my_ajax_receiver.php
<?php
   $value = $_POST['val'];
   echo "$value";
?>

edited Mar 02 '17 at 12:39

answered Mar 02 '17 at 12:30

Toxide82

277
1
7

orignal answer here [http://stackoverflow.com/questions/5202070/how-to-pass-jquery-variables-to-php-variable] – Toxide82 Mar 02 '17 at 12:40

Get Javascript Variable value in PHP variable

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