From: Kai dot Kunstmann at combase dot de
Operating system: any
PHP version: 5.2.5
PHP Bug Type: SPL related
Bug description: array sematics for ArrayObject and derivates
Description:
------------
As you probably know, objects extending or implementing certain classes
and interfaces from the SPL allow for special array syntax.
e.g. the array-push idiom on the ArrayAccess interface:
<? $ArrayAccessImpl[] = $element; ?>
...or the foreach-loop on Iterator:
<? foreach($ArrayIteratorImpl as $element) { ... } ?>
...ArrayObject even allows for the list-each idiom:
<? while(list($k,$v) = each($ArrayObject)) { ... } ?>
This is a nice feature, which I very much appreciate. However, it is error
prone as it is not complete. The avarage PHP user, none-OOP programmer and
not-about-type-caring guy will certainly fail to replace arrays with
ArrayObject and that alike, as it simply is not the same. It's just the
same syntax for two different semantics.
I like the idea to be able to implement my own Collection classes and
iterate over instances just like in Java. Taking that road however requires
me to implement my own utility methods like 'sort()' and derivates (yes,
some build-ins fail to sort an $ArrayObject) and replacements for all those
high-performance array_* methods.
Replacing those is necessary because the only common thing ArrayObject and
array do share is in fact the special array syntax I mentioned before -
plus some functions that 'magically' work.
Refactoring existing functional code to OOP design patterns is a pain, if
not impossible, but desired to reduce development costs.
I hereby request some improvement on ArrayObject and its siblings, ie.
- a better integration with the already existing array_* functions, so
that ArrayObject and derivates can be considered real arrays.
- a richer set of predefined interfaces and utility classes like
ArrayAccess and Iterator that allow any implementing class to be used in
certain array context, eg. Sortable, Comparable, Mergable, Walkable , etc.
- maybe a collection interface just like in Java, with 'Array' being the
most versatile class -- implementing most of the interfaces.
...or maybe just some more 'magic functions' that allow the prior, but
cripple PHP's emerging OOP approach.
Reproduce code:
---------------
$ArrayObject = new ArrayObject();
$ArrayObject[] = 'foo';
$ArrayObject[] = 'bar';
$ArrayObject[] = 479;
sort($ArrayObject);
var_dump($ArrayObject);
$values = array_values($ArrayObject);
var_dump($values);
foreach($ArrayObject as $key => $value) {
var_dump($key, $value);
}
var_dump(is_array($ArrayObject));
Expected result:
----------------
string(6) "sorted"
object(ArrayObject)#1 (3) {
[0]=>
string(3) "bar"
[1]=>
string(3) "foo"
[2]=>
int(479)
}
string(6) "values"
array(3) {
[0]=>
string(3) "bar"
[1]=>
string(3) "foo"
[2]=>
int(479)
}
string(8) "is_array"
bool(true)
Actual result:
--------------
<b>Warning</b>: sort() expects parameter 1 to be array, object given in
<b>...</b><br />
string(6) "sorted"
object(ArrayObject)#1 (3) {
[0]=>
string(3) "foo"
[1]=>
string(3) "bar"
[2]=>
int(479)
}
<br />
<b>Warning</b>: array_values() [<a
href='function.array-values'>function.array-values</a>]: The argument
should be an array in <b>...</b><br />
string(6) "values"
NULL
string(8) "is_array"
bool(false)
--
Edit bug report at http://bugs.php.net/?id=44734&edit=1
--
Try a CVS snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=44734&r=trysnapshot52
Try a CVS snapshot (PHP 5.3):
http://bugs.php.net/fix.php?id=44734&r=trysnapshot53
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=44734&r=trysnapshot60
Fixed in CVS: http://bugs.php.net/fix.php?id=44734&r=fixedcvs
Fixed in release:
http://bugs.php.net/fix.php?id=44734&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=44734&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=44734&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=44734&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=44734&r=support
Expected behavior: http://bugs.php.net/fix.php?id=44734&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=44734&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=44734&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=44734&r=globals
PHP 4 support discontinued: http://bugs.php.net/fix.php?id=44734&r=php4
Daylight Savings: http://bugs.php.net/fix.php?id=44734&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=44734&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=44734&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=44734&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=44734&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=44734&r=mysqlcfg
