What is the function used to load a PHP document when clicking a link in jQuery?

To load a PHP document when clicking a link in jQuery, you can use the `load()` function. This function allows you to load data from the server and place the returned HTML into the matched element. You can specify the PHP document you want to load as the first parameter in the `load()` function and the target element where you want to display the content as the second parameter.

$(document).ready(function(){
    $("a").click(function(){
        $("#result").load("example.php");
    });
});