#33652 [Asn->Bgs]: $this not available in a variable variable

ID: 33652 Updated by: derick@php.net Reported By: ludvig dot ericson at gmail dot com -Status: Assigned +Status: Bogus Bug Type: Scripting Engine problem Operating System: * PHP Version: 5CVS-2005-07-11 Assigned To: dmitry New Comment: 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 Previous Comments: ------------------------------------------------------------------------ [2005-07-12 10:20:41] sniper@php.net Works fine with PHP 4.4.0, not with latest CVS HEAD. ------------------------------------------------------------------------ [2005-07-12 03:30:20] colder@php.net Notice also that ${'this'} will work but not ${'this'.''} or ${(string)'this'} for example. It should be at least documented that this pseudo-variable lacks some features. ------------------------------------------------------------------------ [2005-07-12 03:06:43] ludvig dot ericson at gmail dot com Description: ------------ Using variable variables ($$MyVar) in classes, through functions that is, doesn't allow $this to be used. I tried with $this (notice the $) too, no difference. A workaround is to check the object name, if it's "this" you could $this->$Mem instead. Reproduce code: --------------- <?php class Foo { public $MyVal = "Test"; public Bar($Obj, $Mem) { return ${$Obj}->$Mem; } } $TheObject = new Foo(); $Objname = "this"; $Memname = "MyVal"; echo $TheObject->Bar($Objname, $Memname); ?> Expected result: ---------------- I expect it to output "Test" Actual result: -------------- Notice: Undefined variable: this in (filepath) on line 6 Notice: Trying to get property of non-object in (filepath) on line 6 ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=33652&edit=1