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>

    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

• javascript
• php
• jquery
• html

• read this stackoverflow./questions/14354147/… – Afsar Commented Mar 2, 2017 at 12:22
• 4 Read this: What is the difference between client-side and server-side programming? – Jomoos Commented Mar 2, 2017 at 12:23
• Then What should I do for getting selected value in a php variable – Zaid Butt Commented Mar 2, 2017 at 12:38
• use ajax for this . php server side so need to use ajax for this condition – Shafiqul Islam Commented Mar 2, 2017 at 12:50
• Possible duplicate of How to pass jQuery variables to PHP variable? – Zachary Craig Commented Mar 2, 2017 at 12:56

2 Answers 2

use this code for use variable

  <?php
  session_start();
  echo $_SESSION['php_value'];
  ?>
  <script src="https://ajax.googleapis./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'];
?>

Ajax can do this. Google it, and check out api.jquery. 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";
?>