#33512 [Opn->Bgs]: Encountered error on using magic method (Overload Section)

ID: 33512 Updated by: sniper@php.net Reported By: muhamad_zakaria at yahoo dot com -Status: Open +Status: Bogus Bug Type: Scripting Engine problem Operating System: Windows XP Pro PHP Version: 5.1.0-dev New Comment: . Previous Comments: ------------------------------------------------------------------------ [2005-07-04 10:51:52] dmitry@php.net PHP hasn't magic callback to unset overloaded properties. This is the reason why unset($SomeObj->Virtual1) doesn't work. ------------------------------------------------------------------------ [2005-07-04 10:38:12] muhamad_zakaria at yahoo dot com We have tried from the feedback (tony2001), and the raised error is no longer. But we have another experiences while using 'unset' statement, such as below: // we will try to unset these variables unset($SomeObj->RealVar1); unset($SomeObj->{'RealVar'.(3)}); //the lines below will catch by '__get' magic method since these variables are unavailable anymore print $SomeObj->RealVar1."\n"; print $SomeObj->{'RealVar'.(3)}."\n"; // now we will try to unset these variables unset($SomeObj->Virtual1); unset($SomeObj->{'Virtual'.(3)}); //but, these variables are still available??? eventhough they're "unset"-ed print $SomeObj->Virtual1."\n"; print $SomeObj->{'Virtual'.(3)}."\n"; ------------------------------------------------------------------------ [2005-06-30 10:23:37] tony2001@php.net Please try using this CVS snapshot: http://snaps.php.net/php5-latest.tar.gz For Windows: http://snaps.php.net/win32/php5-win32-latest.zip ------------------------------------------------------------------------ [2005-06-30 05:12:01] muhamad_zakaria at yahoo dot com Description: ------------ When we used virtual variables exploiting __set overload method, we encountered errors. Reproduce code: --------------- class TheObj { public $RealVar1, $RealVar2, $RealVar3, $RealVar4; public $Var = array(); function __set($var, $val) { $this->Var[$var] = $val; } function __get($var) { if(isset($this->Var[$var])) return $this->Var[$var]; else return -1; } } $SomeObj = new TheObj; // this will fine $SomeObj->RealVar1 = 'somevalue'; $SomeObj->{'RealVar2'} = 'othervalue'; $SomeObj->{'RealVar'.(3)} = 'othervaluetoo'; $SomeObj->{'RealVar'.'4'} = 'anothervalue'; // this will fine too $SomeObj->Virtual1 = 'somevalue'; $SomeObj->{'Virtual2'} = 'othervalue'; // it's can't be used since this will encounter error $SomeObj->{'Virtual'.(3)} = 'othervaluetoo'; $SomeObj->{'Virtual'.'4'} = 'anothervalue'; // but this will fine, ofcourse $SomeObj->Var['Virtual'.(3)] = 'othervaluetoo'; $SomeObj->Var['Virtual'.'4'] = 'anothervalue'; Expected result: ---------------- No error when we use below lines: <?php $SomeObj->{'Virtual'.(3)} = 'othervaluetoo'; $SomeObj->{'Virtual'.'4'} = 'anothervalue'; ?> because this should applied fine as we did at "RealVarX" treatments. Actual result: -------------- Encountered error raises by php.exe ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=33512&edit=1