How can i use php variable from js?

Question

I have several products. On click product, I send "id" of clicked product to Local Storage. To use this variable in php I send it to items.php ($.post).

Then I need use this "id" from items.php to show in the cart, but variable is emply.

var LSArray = JSON.parse(localStorage.getItem('productID')) || [];

function clickOnProduct(id) {
    var newItem = {'id': id};
    LSArray.push(newItem);

    localStorage.setItem("productID", JSON.stringify(LSArray));
    var dataLS = JSON.parse(localStorage.getItem('productID')) ;

    $.ajax({
                type : "POST", 
                url  : "/wp-content/themes/twentynineteen/items.php", 
                data : { name : dataLS[dataLS.length-1].id },
                success: function(res){  
                    console.log(res);
                }
        });
}

All works fine, but how can I use "id"?

<?php incude(items.php); ?>

dosn't work.

Can you post the code for items.php? Otherwise it is not clear how you are handling the POST. — Jeffhowcodes, Mar 25 '19 at 14:37
@ТатьянаКомпаниец No. Just `` to print it. Or if you want to assign its value to another variable, then `` But by doing that make no real sense. — Juan, Mar 25 '19 at 14:48
Why no sense? How to do correctly? I write and in another page , but doesn't work:( — kompaniietst, Mar 25 '19 at 14:49
Ajax is asynchronous. So it runs at the time of the function call, but when you visit the other page, you're running your PHP code without the POST. It's a timing issue. — Jeffhowcodes, Mar 25 '19 at 15:16
in items.php, store the incoming POST in a SESSION variable. Then you can go to the other page, and access the values from the session instead of including items.php — Jeffhowcodes, Mar 25 '19 at 16:46

score -1 · Answer 1 · answered Mar 25 '19 at 14:41

-1

You are sending it by post. So you can take a look to your post variable by

<?php var_dump($_POST); ?>

Then you will see the array and probably you can access your data by $_POST['name']

answered Mar 25 '19 at 14:41

Juan

463
5
10

why the down vote? – Juan Mar 25 '19 at 14:50
array(0) { } :( – kompaniietst Mar 25 '19 at 15:07

How can i use php variable from js?

1 Answers1