Bug #69725 [NEW]: foreach do not iterate all elements of an array in recursive function

From: dp dot maxime at gmail dot com Operating system: Ubuntu 15.04 PHP version: 5.6.9 Package: Scripting Engine problem Bug Type: Bug Bug description:foreach do not iterate all elements of an array in recursive function Description: ------------ foreach construct do not iterate all elements of an array in recursive functions. I am using PHP 5.6.9 from ppa:ondrej/php5-5.6 on Ubuntu 15.04. The version 5.6.4 from the standard Ubuntu 15.04 distribution is also affected. Test script: --------------- <?php function R(&$X, $level) { print "$level X: " . json_encode($X) . "\n"; $A = $X; foreach($A as &$value) { $value = $value - 1; } print "$level A: " . json_encode($A) . "\n"; $B = $X; foreach($B as &$value) { $value = $value + 1; } print "$level B: " . json_encode($B) . "\n"; if ($level < 3) { R($B, $level + 1); } } $X = array(1, 2, 3); R($X, 0); Expected result: ---------------- 0 X: [1,2,3] 0 A: [0,1,2] 0 B: [2,3,4] 1 X: [2,3,4] 1 A: [1,2,3] 1 B: [3,4,5] 2 X: [3,4,5] 2 A: [2,3,4] 2 B: [4,5,6] 3 X: [4,5,6] 3 A: [3,4,5] 3 B: [5,6,7] Actual result: -------------- 0 X: [1,2,3] 0 A: [0,1,2] 0 B: [2,3,4] 1 X: [2,3,4] 1 A: [1,2,3] 1 B: [3,4,4] 2 X: [3,4,4] 2 A: [2,3,3] 2 B: [4,5,4] 3 X: [4,5,4] 3 A: [3,4,3] 3 B: [5,6,4] -- Edit bug report at https://bugs.php.net/bug.php?id=69725&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=69725&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=69725&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=69725&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=69725&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=69725&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=69725&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=69725&r=needscript Try newer version: https://bugs.php.net/fix.php?id=69725&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=69725&r=support Expected behavior: https://bugs.php.net/fix.php?id=69725&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=69725&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=69725&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=69725&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=69725&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=69725&r=dst IIS Stability: https://bugs.php.net/fix.php?id=69725&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=69725&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=69725&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=69725&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=69725&r=mysqlcfg