note 75278 added to language.types.object

In response to sirbinam. You cannot call a function or method before it exists. In your example, the global instance of stdout is just being passed around to differnet references (pointers). It however exists in the "dump" function scope via the global keyword. The code below works fine and illustrates that "stdout" has been defined before its instantiation. <?php class profiler{ function profiler(){ $this->starttime = microtime(); } function dump(){ global $stdout; $this->endtime = microtime(); $duration = $this->endtime - $this->starttime; $stdout->write($duration); } } class stdout{ function write($msg){ echo $msg; } } $stdout =& new stdout(); $profiler =& new profiler(); $profiler->dump(); ?> All classes and functions declarations within a scope exist even before the php execution reaches them. It does not matter if you have your classes defined on the first or last line, as long as they are in the same scope as where they are called and are not in a conditional statement that has not been evaluated yet. ---- Server IP: 69.147.83.197 Probable Submitter: 210.7.27.26 ---- Manual Page -- http://www.php.net/manual/en/language.types.object.php Edit -- https://master.php.net/note/edit/75278 Del: integrated -- https://master.php.net/note/delete/75278/integrated Del: useless -- https://master.php.net/note/delete/75278/useless Del: bad code -- https://master.php.net/note/delete/75278/bad+code Del: spam -- https://master.php.net/note/delete/75278/spam Del: non-english -- https://master.php.net/note/delete/75278/non-english Del: in docs -- https://master.php.net/note/delete/75278/in+docs Del: other reasons-- https://master.php.net/note/delete/75278 Reject -- https://master.php.net/note/reject/75278 Search -- https://master.php.net/manage/user-notes.php