How to call a specific function in a PHP script via Ajax?

Question

Lets say I have a file called functions.php, and it has two separate functions inside:

One would get the time

And the other would get the date

How will I

Answer 1

You could include a selector in the ajax request data. For example:

$.ajax({
    url: "functions.php",
    data: "function=time", // or function=date if you want date
    ...
});

Then in your PHP code, a simple if-statement will check which one to output.

if(isset($_GET['function'])) {
    if($_GET['function'] == 'time') {
        // do time stuff
    } elseif($_GET['function'] == 'date') {
        // do date stuff
    }
}