Bug #76589 [Opn->Nab]: array_column should error when value is not castable to array key

Edit report at https://bugs.php.net/bug.php?id=76589&edit=1 ID: 76589 Updated by: cmb@php.net Reported by: nobots dot nospam at example dot org Summary: array_column should error when value is not castable to array key -Status: Open +Status: Not a bug Type: Bug Package: Arrays related PHP Version: 7.3.0alpha3 -Assigned To: +Assigned To: cmb Block user comment: N Private report: N New Comment: Since bug #68553 has been fixed, the index keys are almost treated like the usual array key casts[1] (the sole exception being objects which support being cast to string are also allowed), so I'd say that this is not a bug. @ a at b dot c dot de I've seen quite a lot of useful comments on bug tickets from you. Isn't it time to reveal your identity? At least, please don't use domain names occupied by others (unless they're covered by RFC 2606/6761). [1] <http://www.php.net/manual/en/language.types.array.php#example-56> Previous Comments: ------------------------------------------------------------------------ [2018-07-10 22:48:43] a at b dot c dot de I wouldn't say that the second behaviour (values are discarded if keys are repeated) is a bug. The same behaviour is seen in every other situation where array keys can (try to) be repeated (e.g. array_merge, array_flip, array_combine, array_change_key_case, even "$a['foo'] = 1; $a['foo'] = 2;". ------------------------------------------------------------------------ [2018-07-07 04:49:55] example at example dot org sorry for that, someone mentioned it and i thought nobody had reported it already ------------------------------------------------------------------------ [2018-07-06 15:40:52] requinix@php.net Why did you make this second bug report? ------------------------------------------------------------------------ [2018-07-06 14:35:12] cmb@php.net Related to bug #76587. ------------------------------------------------------------------------ [2018-07-06 14:17:36] nobots dot nospam at example dot org Description: ------------ array_column should error when value is not castable to array key without loss of data $a = [ [ 'foo' => 777.5 ], ]; array_column($a, 'foo', 'foo'); is an error because float cannot be used as array key ------------ also it should error if the index already exists and is being overwritten $a = [ [ 'foo' => 777, "hi" => 1 ], [ 'foo' => 777, "hi" => 2 ], ]; the index 777 is written twice and the original value is lost ------------ and this is certainly a bug https://3v4l.org/WhUmh ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=76589&edit=1