Bug #76466 [NEW]: Loop variable confusion

From: cmb Operating system: Linux PHP version: master-Git-2018-06-13 (Git) Package: opcache Bug Type: Bug Bug description:Loop variable confusion Description: ------------ Running the test script without Opcache works fine, but with Opcache enabled it results in erroneous behavior (at least after a few tries). PHP-7.2 does not exhibit this bug. Test script: --------------- <?php function foo() { for ($i = 1; $i <= 2; $i++) { if ($i == 2) { $type = 'text'; } else { $type = 'varchar'; } $field_array[] = ['name' => "pal_field{$i}", 'type' => $type, 'length' => 255, 'unsigned' => 1]; } var_dump($field_array); } foo(); Expected result: ---------------- array(2) { [0]=> array(4) { ["name"]=> string(10) "pal_field1" ["type"]=> string(7) "varchar" ["length"]=> int(255) ["unsigned"]=> int(1) } [1]=> array(4) { ["name"]=> string(10) "pal_field2" ["type"]=> string(4) "text" ["length"]=> int(255) ["unsigned"]=> int(1) } } Actual result: -------------- array(2) { [0]=> array(4) { ["name"]=> string(10) "pal_field1" ["type"]=> string(7) "varchar" ["length"]=> int(255) ["unsigned"]=> int(1) } [1]=> array(4) { ["name"]=> string(10) "pal_field1" ["type"]=> string(7) "varchar" ["length"]=> int(255) ["unsigned"]=> int(1) } } -- Edit bug report at https://bugs.php.net/bug.php?id=76466&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=76466&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=76466&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=76466&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=76466&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=76466&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=76466&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=76466&r=needscript Try newer version: https://bugs.php.net/fix.php?id=76466&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=76466&r=support Expected behavior: https://bugs.php.net/fix.php?id=76466&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=76466&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=76466&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=76466&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=76466&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=76466&r=dst IIS Stability: https://bugs.php.net/fix.php?id=76466&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=76466&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=76466&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=76466&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=76466&r=mysqlcfg