xdebug_function_trace.php

<?php

# command line php -d xdebug.profiler_enable=On -d xdebug.profiler_output_dir=.

ini_set('xdebug.default_enable', 1);
ini_set('xdebug.collect_params', 3);
ini_set('xdebug.collect_return', 1);

xdebug_start_trace('debug');

class XClass {
    public static function foo($params)
    {
        return 'foo';
    }

    public static function bar($param)
    {
        return 'bar';
    }

    public static function baz($param)
    {
        return 'baz';
    }

    public static function nested($param)
    {
        return static::foo($param) . static::bar($param) . static::baz($param);
    }
}

XClass::foo('test');
XClass::bar('test');
XClass::baz('test');
XClass::nested('asdrubal');

echo xdebug_stop_trace() . PHP_EOL;