#43612 [Opn->Asn]: array_map behaviour with string keys undocumented
| From: | bjori@php.net | Date: | Mon, 07 Jan 2008 19:48:47 +0000 |
| Subject: | #43612 [Opn->Asn]: array_map behaviour with string keys undocumented | ||
| References: | 1 | Groups: | php.doc.bugs |
| Request: | Send a blank email to doc-bugs+get-416@lists.php.net to get a copy of this message | ||
ID: 43612
Updated by: bjori@php.net
Reported By: nicholsr@php.net
-Status: Open
+Status: Assigned
Bug Type: Documentation problem
Operating System: all
PHP Version: Irrelevant
-Assigned To:
+Assigned To: nicholsr
New Comment:
You have the karma to fix it yourself... :)
Previous Comments:
------------------------------------------------------------------------
[2007-12-16 23:08:19] nicholsr@php.net
Description:
------------
The behaviour of array_map for string keys is not documented.
If the array argument contains string keys then the returned array
will contain string keys if exactly one array is passed. If more than
one argument is passed then the returned array always has integer keys.
The following code demonstrates:
$ cat 1.php
<?php
$arr = array("stringkey" => "value");
function cb1 ($a) {return array ($a);};
function cb2 ($a,$b) {return array ($a,$b);};
var_dump( array_map("cb1", $arr));
var_dump( array_map("cb2", $arr,$arr));
var_dump( array_map(null, $arr));
var_dump( array_map(null, $arr, $arr));
?>
array(1) {
["stringkey"]=>
array(1) {
[0]=>
string(5) "value"
}
}
array(1) {
[0]=>
array(2) {
[0]=>
string(5) "value"
[1]=>
string(5) "value"
}
}
array(1) {
["stringkey"]=>
string(5) "value"
}
array(1) {
[0]=>
array(2) {
[0]=>
string(5) "value"
[1]=>
string(5) "value"
}
}
------------------------------------------------------------------------
--
Edit this bug report at http://bugs.php.net/?id=43612&edit=1