#42441 [Bgs]: Unable to instanciate a class who's name is in a constant

ID: 42441 User updated by: romain dot tartiere at healthgrid dot org Reported By: romain dot tartiere at healthgrid dot org Status: Bogus Bug Type: Feature/Change Request Operating System: GNU/Linux PHP Version: 5.2.3 New Comment: Not meant to work? haha! BTW, you may reconsider the status of bug #23022 since it is exactly the same kind of problem (parser can only cope with simple situations). Previous Comments: ------------------------------------------------------------------------ [2007-08-30 07:12:49] derick@php.net A quick close doesn't mean it wasn't a correct close. This is not a bug, it's not meant to work. And don't lecture us about LALR parsers when you have no idea how PHP works. ------------------------------------------------------------------------ [2007-08-27 12:42:34] romain dot tartiere at healthgrid dot org Thank you for your personalised answer and taking time to read and understand my bug report. There is nothing about this behaviour in: - http://php.net/manual/en/language.oop5.basic.php#language.oop5.basic.new - http://php.net/manual/en/language.constants.php Moreover, the behaviour I describe is common to all programming languages I know (I don't pretent to know all languages, I just tell that PHP constants are not like other programming language constants). According to me, it is just a LALR parser mistake. Something like... stuff: [...] | TOK_NEW string '(' ')' | TOK_NEW variable '(' ')' ... instead of ... stuff: [...] | TOK_NEW expression '(' ')' Sorry for being rude, but your copy-paste-reply make me feel my problem has been underestimated by an inexperienced person. But maybe I am wrong, then just prove me that what I am talking about is nonsense... According to me, if I can't do "new a" but can do "b = a; new b", there is something wrong. ------------------------------------------------------------------------ [2007-08-27 10:22:24] jani@php.net Thank you for taking the time to write to us, but this is not a bug. Please double-check the documentation available at http://www.php.net/manual/ and the instructions on how to report a bug at http://bugs.php.net/how-to-report.php ------------------------------------------------------------------------ [2007-08-27 10:08:45] romain dot tartiere at healthgrid dot org Description: ------------ If you use define to set the name of a class to a constant, you can't use it to instanciate the class. Reproduce code: --------------- <?php class foo {} define('MYCLASS', 'foo'); $f = new MYCLASS(); # Won't work $f = new $_CONSTANTS['MYCLASS'](); # Won't work $s = MYCLASS; $f = new $s(); # Works ?> Expected result: ---------------- These way of instanciating the foo class should all work. Actual result: -------------- The two first syntax produce the same result: Fatal error: Class name must be a valid object or a string ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=42441&edit=1