Bug #79525 [NEW]: Foreach converting/casting array keys to int

From: data dot protection dot gdpr at gmail dot com Operating system: CentOS 6 PHP version: 7.3.17 Package: Arrays related Bug Type: Bug Bug description:Foreach converting/casting array keys to int Description: ------------ I have an array with "numeric" key as string (e.g. '1'), intentionally, as semantically it makes sense for the context. However, I noticed that using a foreach will convert the numeric string keys to "int", which then causes problems with strict comparisons, for example. This does not seem like a good behavior, and I wonder if this should change. Test script: --------------- <?php $array = array( '' => 'test', '1' => 'test1', '5' => 'test5', '2' => 'test2', '10' => 'test10' ); foreach ($array as $key => $val) { var_dump($key); } Expected result: ---------------- string(0) "" string(1) "1" string(1) "5" string(1) "2" string(2) "10" Actual result: -------------- string(0) "" int(1) int(5) int(2) int(10) -- Edit bug report at https://bugs.php.net/bug.php?id=79525&edit=1 -- Fix committed: https://bugs.php.net/fix.php?id=79525&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=79525&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=79525&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=79525&r=needscript Try newer version: https://bugs.php.net/fix.php?id=79525&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=79525&r=support Expected behavior: https://bugs.php.net/fix.php?id=79525&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=79525&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=79525&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=79525&r=globals PHP version support discontinued: https://bugs.php.net/fix.php?id=79525&r=phptooold Daylight Savings: https://bugs.php.net/fix.php?id=79525&r=dst IIS Stability: https://bugs.php.net/fix.php?id=79525&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=79525&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=79525&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=79525&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=79525&r=mysqlcfg