Printing a clean debug backtrace in PHP.
// PHP < 5.3.6
foreach (debug_backtrace() as $trace)
{
echo sprintf("\n%s:%s %s::%s", $trace['file'], $trace['line'], $trace['class'], $trace['function']);
}
die;
// PHP >= 5.3.6
debug_print_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS);
die;