Select from table where user is equal to localStorage value [duplicate]

I have a value stored in localstorage like this:

window.localStorage.setItem('name', document.getElementById("name_text").value); 

When query the table, I want go query like this:

$query = "SELECT * FROM table WHERE user= " 

I want to select from my table, where the user is equal to the value stored in localStorage. How can I do this?

I tried the following but no get no info from the table:

<script> var keyName = window.localStorage.getItem('name'); </script> <?php $query = "SELECT * FROM table WHERE name='.$keyName.'" ?> 

Test 1:

<script> var name = window.localStorage.getItem('name'); $.ajax({ url: "index.php", method: "POST", data: { "name": name } }) </script> <?php $name = $_POST['name']; echo($name); // prints 1 $query = "SELECT * FROM table WHERE name='$name'"; ?>