Bug #14992 Updated: Behaviour of $array = $array1 + $array2; not documented

ID: 14992 Updated by: jan@php.net Reported By: mfischer@php.net -Status: Open +Status: Closed Bug Type: Documentation problem PHP Version: 4.1.1 New Comment: This bug has been fixed in CVS. You can grab a snapshot of the CVS version at http://snaps.php.net/. In case this was a documentation problem, the fix will show up soon at http://www.php.net/manual/. In case this was a PHP.net website problem, the change will show up on the PHP.net site and on the mirror sites. Thank you for the report, and for helping us make PHP better. Previous Comments: ------------------------------------------------------------------------ [2002-06-29 13:03:04] steph.fox@btinternet.com This is actually documented under array_merge() (was it always? - dunno) but omits to mention that shared keys will be overwritten on a first-come first-served basis. Quick update, anyone with access? ------------------------------------------------------------------------ [2002-01-16 14:44:51] philip@php.net We know, but it needs to be documented nevertheless. I posted a rather detailed test. The question is "where" to document it exactly. ------------------------------------------------------------------------ [2002-01-16 12:53:08] andrei@php.net $array1 + $array2 is *not* the same as array_merge(). See for yourself with array(1, 2) and array(5, 6, 7). ------------------------------------------------------------------------ [2002-01-11 06:03:44] philip@php.net Where should this feature be documented, I see two viable options: a) Under array_merge() b) A new "Array Operators" man page. I assume most people wanting to merge arrays will go to array_merge() but having it's own man page could make room to clearly explain the differences of it and array_merge and array_merge_recursive. I vote for (b). Of course the functions would link to it. This is kinda like how backticks are documented now, as, "Execution Operators". A brief note under "Arithmetic Operators" may be appropriate too. Also, for those interested in documenting this beast, please see this post: http://marc.theaimsgroup.com/?l=phpdoc&m=101074306518514 ------------------------------------------------------------------------ [2002-01-11 05:04:53] mfischer@php.net The behaviour of the following code doens't seem to be documented: <? $foo = array(27 => 'Ene'); $bar = array(-1 => 'Mene'); $baz = $foo + $bar; var_dump($baz); ?> array(2) { [27]=> string(3) "Ene" [-1]=> string(4) "Mene" } ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=14992&edit=1