#41372 [Opn]: Internal pointer of source array resets during array copying

ID: 41372 User updated by: forjest at gmail dot com Reported By: forjest at gmail dot com Status: Open Bug Type: Arrays related Operating System: WinXP, Linux PHP Version: 4.4.7 New Comment: /*for simple case just wrap array in some array function. That will cause small overhead, but at least save your internal pointer*/ $Foo = array('val1', 'val2', 'val3'); end($Foo); var_dump(key($Foo)); $AllOkay = array_merge($Foo); var_dump(key($Foo)); ---------- /*But to make immune running context for error handler function nothing helps, except ugly serialize/unserialize solution*/ error_reporting(E_ALL); function TestErrorHandler($severity, $message, $filename, $line, $super_globals) { global $foo; $foo = unserialize(serialize($super_globals)); } class Test { function run() { $Res = array('val1', 'val2', 'val3'); end($Res); var_dump(key($Res)); HEY;//raise notice error var_dump(key($Res)); } } $test = new Test(); set_error_handler('TestErrorHandler'); $test-> run(); Previous Comments: ------------------------------------------------------------------------ [2007-05-12 08:32:17] forjest at gmail dot com Description: ------------ Bug first appeared in 4.4.2. Version 4.4.1 works okay. 5.1.4, 5.2.1 has this bug too. ----- Seems algorithm of array copying was changed at 4.4.2 and 5.1.2 versions. ----- This behavior cause problems in unexpected situations such as error handling functions, when array pointer reseted due copying from another array which reference to it. Reproduce code: --------------- $Foo = array('val1', 'val2', 'val3'); end($Foo); var_dump(key($Foo)); $MagicInternalPointerResetter = $Foo; var_dump(key($Foo)); -- Code describing unexpected results of this behavior listed here: http://www.pastebin.ru/10226 Expected result: ---------------- int(2) int(2) Actual result: -------------- int(2) int(0) ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=41372&edit=1