Bug #70053 [NEW]: MutlitpleIterator array-keys incompatible change in PHP 7

From: hanskrentel at yahoo dot de Operating system: Linux/Docker/Travis PHP version: 7.0.0beta1 Package: SPL related Bug Type: Bug Bug description:MutlitpleIterator array-keys incompatible change in PHP 7 Description: ------------ SPL's MultipleIterator allows to iterate over multiple arrays at once. It does so by providing an array for current() and key() having (normally) one field for each of the inner iterators. When attaching an iterator, an optional integer or string value can be provided to specify the array-key for later use. In PHP prior 7 attaching two iterators with the two keys string(1) "2" and int(2) (or vice-versa) made MultipleIterator current() and key() return an array with *one* entry taking the key as integer value (int(2)) and the value of the later inner-iterator. This is known and common PHP behaviour to normalize strings to integers if possible to represent integer array keys. In PHP 7 there is a flaw with this, as the array now contains *two* entries, both string(1) "2" and int(2): Test script: --------------- <?php echo "-- Two empty iterators attached with infos that are different but same array key --\n"; $mit = new MultipleIterator(MultipleIterator::MIT_KEYS_ASSOC); $mit ->attachIterator(new EmptyIterator(), "2"); $mit ->attachIterator(new EmptyIterator(), 2); var_dump($mit->countIterators()); $mit->rewind(); var_dump($mit->current()); Expected result: ---------------- -- Two empty iterators attached with infos that are different but same array key -- int(2) array(1) { [2]=> NULL } Actual result: -------------- -- Two empty iterators attached with infos that are different but same array key -- int(2) array(2) { ["2"]=> NULL [2]=> NULL } -- Edit bug report at https://bugs.php.net/bug.php?id=70053&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=70053&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=70053&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=70053&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=70053&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=70053&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=70053&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=70053&r=needscript Try newer version: https://bugs.php.net/fix.php?id=70053&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=70053&r=support Expected behavior: https://bugs.php.net/fix.php?id=70053&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=70053&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=70053&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=70053&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=70053&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=70053&r=dst IIS Stability: https://bugs.php.net/fix.php?id=70053&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=70053&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=70053&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=70053&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=70053&r=mysqlcfg