Doc #80685 [Opn->Nab]: array_merge - odd behaviour with string keys

Edit report at https://bugs.php.net/bug.php?id=80685&edit=1 ID: 80685 Updated by: requinix@php.net Reported by: raddi at gmx dot net Summary: array_merge - odd behaviour with string keys -Status: Open +Status: Not a bug Type: Documentation Problem Package: Unknown/Other Function Operating System: Ubuntu 20.04 / Windows PHP Version: Irrelevant Block user comment: N Private report: N New Comment: > Yes, the keys from Test-script can be converted to integer but was defined as > string key. It does not matter if your code puts the keys in quotes: if it looks like a (valid) integer then it will be treated as a integer. https://3v4l.org/T1Jrg > right now it is not in the mentioned documentation anymore. It is documented in the general information about arrays: > * Strings, die einen gültigen dezimalen Integer enthalten, es sei denn der Zahl sei ein +- > Zeichen vorangestellt, werden zum entsprechenden Integer umgewandelt. Beispielsweise wird > der Schlüssel "8" tatsächlich unter 8 gespeichert. Andererseits wird > "08" nicht umgewandelt, > da dies kein gültiger Ganzzahlwert ist. https://www.php.net/manual/de/language.types.array.php#language.types.array.syntax.array-func > I get this result only on my old Raspberry running PHP 7.3.19-1~deb10u1. Those two numbers are outside the range of a 32-bit integer. Is your old Pi running 32-bit PHP? Previous Comments: ------------------------------------------------------------------------ [2021-01-29 07:34:37] raddi at gmx dot net Description: ------------ Test-script below is expected to output the following (according to documentation at https://www.php.net/manual/de/function.array-merge.php) as the keys of the input-arrays are strings Array ( [54984941951919] => aa [549849419519193] => bb ) I get this result only on my old Raspberry running PHP 7.3.19-1~deb10u1. On other servers (Windows witth 7.4.14; Docker with 7.4.14, 8.0.1, 7.3.19 and 7.3.26; even on an Ubuntu 20.04 with 7.3.19-1~deb10u1) the result is Array ( [0] => aa [1] => bb ) with is for arrays with numeric keys. Yes, the keys from Test-script can be converted to integer but was defined as string key. At least I expect a consistent behaviour on all PHP-versions and a hint within the documentation about string keys beeing convertable to integers. I've found some older bugs (#25470, #18075, #13478, #54140) about this behaviour with #54140 stating that in the manual I should read "Strings containing valid integers will be cast to the integer type." but right now it is not in the mentioned documentation anymore. Test script: --------------- $arra = array('54984941951919'=>'aa'); $arrb = array('549849419519193'=>'bb'); echo '<pre>'; print_r( array_merge($arra, $arrb) ); Expected result: ---------------- Array ( [54984941951919] => aa [549849419519193] => bb ) Actual result: -------------- Array ( [0] => aa [1] => bb ) ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=80685&edit=1