What tools or plugins can be used to visualize the flow of a PHP script in NetBeans IDE?

To visualize the flow of a PHP script in NetBeans IDE, you can use the xdebug extension along with a debugging tool like Xdebug Trace Viewer. This combination allows you to set breakpoints in your code, step through the execution, and visualize the flow of the script in a graphical interface.

// Sample PHP script with xdebug extension
$x = 5;
$y = 10;

function add($a, $b) {
    return $a + $b;
}

$result = add($x, $y);
echo $result;