问通过Ajax发送帖子以在后台运行PHP脚本

EN

<script>
    function sendingRequest()
    {
        var form = document.getElementById("submit_change");
        var var1 = document.getElementById('var1').value;
        var var2 = document.getElementById('var2').value;
        var var3 = document.getElementById('var3').value;
        var dataString = 'var1='+ var1 + '&var2=' + var2 + '&var3=' + var3;
        $.ajax({
            type:"post",
            url:"recievingScript.php",
            data:dataString,
            cache:false
        });
        form.submit();
        return false;
    }
</script>

<?php
ignore_user_abort(true);
//includes, uses, requires, establish db connection
$var1 = $_POST['var1'];
$var2 = $_POST['var2'];
$var3 = $_POST['var3'];

header("Access-Control-Allow-Origin: *");
header("Connection: close");

//Code to be run

//end script
?>