#36571 [NEW]: __set() affects outer variable when overloading with "[]=" and "{}="

From: cid73 at 163 dot com Operating system: WinXP SP2 PHP version: 5.1.2 PHP Bug Type: Scripting Engine problem Bug description: __set() affects outer variable when overloading with "[]=" and "{}=" Description: ------------ I'm not sure if there are inner operaters named "[]=" or "{}=", but it really goes wrong when overloading such operations. Here's some demo code. Reproduce code: --------------- class Setter { private $attributes; public function __construct($attributes) { $this->attributes = $attributes; } private function __set($var, $value) { $this->attributes[$var] = $value; } private function __get($var) { if ( isset($this->attributes[$var]) ) { return $this->attributes[$var]; } else { return null; }} } $a = array('a' => array('a', 'b', 'c'), 'b' => 'Hello'); $o = new Setter($a); $o->a[0] = 'A'; $o->a[] = 'd'; $o->b{0} = 'h'; print_r($a); // gotta check $a, $o is good /* ouputs: Array ( [a] => Array ( [0] => A [1] => b [2] => c [3] => d ) [b] => hello ) */ Expected result: ---------------- $a is unchangeable at the moment Actual result: -------------- $a was modified -- Edit bug report at http://bugs.php.net/?id=36571&edit=1 -- Try a CVS snapshot (PHP 4.4): http://bugs.php.net/fix.php?id=36571&r=trysnapshot44 Try a CVS snapshot (PHP 5.1): http://bugs.php.net/fix.php?id=36571&r=trysnapshot51 Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=36571&r=trysnapshot60 Fixed in CVS: http://bugs.php.net/fix.php?id=36571&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=36571&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=36571&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=36571&r=needscript Try newer version: http://bugs.php.net/fix.php?id=36571&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=36571&r=support Expected behavior: http://bugs.php.net/fix.php?id=36571&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=36571&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=36571&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=36571&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=36571&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=36571&r=dst IIS Stability: http://bugs.php.net/fix.php?id=36571&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=36571&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=36571&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=36571&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=36571&r=mysqlcfg