$name = "John"; debug($name);
function add($a, $b) { $result = $a + $b; debug("Result: " . $result); return $result; } add(2, 3);In this example, the `debug()` function is used to output the result of the `add()` function. This can help to trace function calls and identify issues with function parameters or return values. Package library: The PHP Debug tool is part of the Xdebug package library, which is a powerful debugging and profiling tool for PHP. It provides additional features such as stack traces, code coverage analysis, and support for remote debugging.