如何将 API 生成的 JavaScript 变量作为表单的一部分传递给 php 变量？

Question

I have variables generated with a JS Script that I want to pass back to the PHP program that called the script, and trying to figure out the best method for doing that. Because there are 4-5 variables, I do not want to pass it to php using the url.

The form is using PHP Form Builder and is correctly passing back one variable variable from a Google Maps API JS Script. The PHP code to set up form:

$form->addIcon('town-req', '<i class="fa fa-map-marker" aria-hidden="true"></i>', 'before');
$form->addInput('text', 'town-req', '', '', 'placeholder=Your town,onFocus=\'geolocate()\', required');

The values are stored in a MySQL DB using:

= Mysql::SQLValue($_POST['town-req']);

Within the script, I can assign the other variables I want to pass back to the PHP, such as latitude and longitude:

var lat = place.geometry.location.lat(),
    lng = place.geometry.location.lng();

Is it possible to pass these variables such as “lat” to a $_POST as a hidden field in the form?

Or is AJAX is the best way to accomplish this? Is there an example that can help?

Answer 1

I was able to use ajax for this - it was actually much easier than I thought!

$.ajax({
    type: 'POST',
    data: {lng:lng},
    success: function(data) {
    console.log(lng);
    }
})