Bug #77614 [Nab]: Array: mixed keys problem in foreach loop

Edit report at https://bugs.php.net/bug.php?id=77614&edit=1 ID: 77614 User updated by: shorvat at gmail dot com Reported by: shorvat at gmail dot com Summary: Array: mixed keys problem in foreach loop Status: Not a bug Type: Bug Package: Arrays related Operating System: Win 10 & Ubuntu server PHP Version: Irrelevant Block user comment: N Private report: N New Comment: I did not read documentation well enough apparently. Sorry. At a time, when I reported this "bug", I thought that $array['0'] is not the same as $array[0]. Previous Comments: ------------------------------------------------------------------------ [2019-02-13 20:55:25] spam2 at rhsoft dot net > That's right. But 'word' == '0' is false no it is not $array['0'] becomes implicit $array[0] php > echo (int)"word"; 0 http://php.net/manual/en/language.types.type-juggling.php http://php.net/manual/en/types.comparisons.php ------------------------------------------------------------------------ [2019-02-13 19:28:46] requinix@php.net Thank you for taking the time to write to us, but this is not a bug. Please double-check the documentation available at http://www.php.net/manual/ and the instructions on how to report a bug at http://bugs.php.net/how-to-report.php http://php.net/manual/en/language.types.array.php > Additionally the following key casts will occur: > > * Strings containing valid decimal integers, unless the number is preceded by a > + sign, will be cast to the integer type. E.g. the key "8" will actually be > stored under 8. On the other hand "08" will not be cast, as it isn't a valid > decimal integer. As the var_dump shows, $k === 0. ------------------------------------------------------------------------ [2019-02-13 18:14:27] shorvat at gmail dot com That's right. But 'word' == '0' is false ------------------------------------------------------------------------ [2019-02-13 18:08:06] rtheunissen@php.net This is because "word" == 0 is true. See https://3v4l.org/A66OG ------------------------------------------------------------------------ [2019-02-13 18:04:16] shorvat at gmail dot com Description: ------------ PHP 7.0.10 & 5.6.25 Key comparation in foreach loop not working as expected when keys are of mixed types (strings and ints) If I use triple-equals operator (===) it works just fine, but it seems it should work with double-equals operator (==) as well. Test script: --------------- $array = array(); $array['word'] = "test 1"; $array['0'] = "test 2"; $array['1'] = "test 3"; foreach($array as $k=>$v) { var_dump($k); if($k == "word") { continue; } print_r($v); } Expected result: ---------------- C:\wamp64\www\tst\array_bug.php:10:string 'word' (length=4) C:\wamp64\www\tst\array_bug.php:10:int 0 test 2 C:\wamp64\www\tst\array_bug.php:10:int 1 test 3 Actual result: -------------- C:\wamp64\www\tst\array_bug.php:10:string 'word' (length=4) C:\wamp64\www\tst\array_bug.php:10:int 0 C:\wamp64\www\tst\array_bug.php:10:int 1 test 3 ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=77614&edit=1