#48646 [NEW]: SimpleXML Element write causes infinity loop in Foreach

From: php at mrfoo dot de Operating system: Windows XP / Debian Lenny PHP version: 5.2.10 PHP Bug Type: SimpleXML related Bug description: SimpleXML Element write causes infinity loop in Foreach Description: ------------ Tested with: 5.2.6(win), 5.2.9(win) and 5.2.9-0.dotdeb.2 (lin). Writing a value of a SimpleXML-Element in a foreach loop, causes PHP to never leave the foreach loop, if you access that element via an extra index. Reproduce code: --------------- error_reporting(E_ALL); $xmlData = '<root><child><name>A child</name><info><version>1</version></info></child><child><name>B child</name><info><version>2</version></info></child><child><name>C child</name><info><version>2</version></info></child><child><name>D child</name><info><version>3</version></info></child></root>'; $xml = simplexml_load_string($xmlData); $i = -1; foreach ($xml as $xi => $child) { ++$i; $xml->child[$i]->info->version = rand(1,9); echo 'I: '.$i.' Xi: '.$xi.' Count : '.count($xml).' '.$xml->child[$i]->name.' => '.$child->name.' v:'.$child->info->version."\n"; if($i > 10) { echo "Too many iterations"; break; } } // Code below works as expected $xml = simplexml_load_string($xmlData); for($i = 0, $size = count($xml); $i < $size; ++$i) { echo 'I: '.$i.' Count : '.count($xml).' '.$xml->child[$i]->name."\n"; $xml->child[$i]->info->version = rand(1,9); } Expected result: ---------------- Something like that: I: 0 Xi: child Count : 4 A child => A child v:1 I: 1 Xi: child Count : 4 B child => B child v:3 I: 2 Xi: child Count : 4 C child => C child v:3 I: 3 Xi: child Count : 4 D child => D child v:7 I: 0 Count : 4 A child I: 1 Count : 4 B child I: 2 Count : 4 C child I: 3 Count : 4 D child Actual result: -------------- I: 1 Xi: child Count : 4 B child => B child v:6 I: 2 Xi: child Count : 4 C child => B child v:6 I: 3 Xi: child Count : 4 D child => B child v:6 I: 4 Xi: child Count : 5 => B child v:6 I: 5 Xi: child Count : 6 => B child v:6 I: 6 Xi: child Count : 7 => B child v:6 I: 7 Xi: child Count : 8 => B child v:6 I: 8 Xi: child Count : 9 => B child v:6 I: 9 Xi: child Count : 10 => B child v:6 I: 10 Xi: child Count : 11 => B child v:6 I: 11 Xi: child Count : 12 => B child v:6 Too many iterations I: 0 Count : 4 A child I: 1 Count : 4 B child I: 2 Count : 4 C child I: 3 Count : 4 D child -- Edit bug report at http://bugs.php.net/?id=48646&edit=1 -- Try a CVS snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=48646&r=trysnapshot52 Try a CVS snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=48646&r=trysnapshot53 Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=48646&r=trysnapshot60 Fixed in CVS: http://bugs.php.net/fix.php?id=48646&r=fixedcvs Fixed in CVS and need be documented: http://bugs.php.net/fix.php?id=48646&r=needdocs Fixed in release: http://bugs.php.net/fix.php?id=48646&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=48646&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=48646&r=needscript Try newer version: http://bugs.php.net/fix.php?id=48646&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=48646&r=support Expected behavior: http://bugs.php.net/fix.php?id=48646&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=48646&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=48646&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=48646&r=globals PHP 4 support discontinued: http://bugs.php.net/fix.php?id=48646&r=php4 Daylight Savings: http://bugs.php.net/fix.php?id=48646&r=dst IIS Stability: http://bugs.php.net/fix.php?id=48646&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=48646&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=48646&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=48646&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=48646&r=mysqlcfg