Bug #75826 [NEW]: Unintended array key integer to string conversion after unsetting in foreach

From: leon dot valkenborg at blackpepper dot co dot nz Operating system: Ubuntu PHP version: 7.2.1 Package: JSON related Bug Type: Bug Bug description:Unintended array key integer to string conversion after unsetting in foreach Description: ------------ json_encode will parse the PHP array as if it has string keys when a numerical key is unset. var_dump() shows expected results. So i assume this issue is wit json_encode(). Test script: --------------- <? $array = array('a','b','c'); unset($array[0]); echo json_encode($array); ?> Expected result: ---------------- ["b","c"] Actual result: -------------- {"1":"b","2":"c"} -- Edit bug report at https://bugs.php.net/bug.php?id=75826&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=75826&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=75826&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=75826&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=75826&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=75826&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=75826&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=75826&r=needscript Try newer version: https://bugs.php.net/fix.php?id=75826&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=75826&r=support Expected behavior: https://bugs.php.net/fix.php?id=75826&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=75826&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=75826&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=75826&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=75826&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=75826&r=dst IIS Stability: https://bugs.php.net/fix.php?id=75826&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=75826&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=75826&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=75826&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=75826&r=mysqlcfg