Use Localstorage Variables in PHP

Is it possible to store a resulting php variable into localStorage?

You can store directly like this, as long as you got PHP has this data with you in the same page

<script>
   localStorage.setItem('php_var', "<?php echo $var;?>");
</script>

Sending a localstorage variable to PHP

echo $userMark in marks.php

marks.php

<?php

 echo $userMark = $_POST['userMark'];
 echo $userMark;

?>

profile.php

and alert data in javascript

 $(document).ready(function(){

        var userMarkVar = localStorage.getItem("userMark");

        jQuery.post("marks.php", {userMark: userMarkVar}, function(data){
          alert(data);
        }).fail(function(){
          alert("Error");
        });

});

Get localStorage value into php

You can not directly get a localStorage value in PHP, when script is executed, because localStorage is contained in user's browser, and PHP is running on server. However, you can send the value from localStorage to a server with GET or POST request.

Send Javascript local storage variables to MySql database using JQuery

When using Ajax I recommend trying the non-shorthand:

   $.ajax({
      type: "POST",
      url: 'auditConfirm.php',
      data: {
                jsAuditPercentage: localAuditPercentage,
                jsVenuePercentage: localVenuePercentage, 
            }
    });

This solution works on my end.

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