From:
Operating system: Ubuntu 10.10
PHP version: 5.3.3
Package: Class/Object related
Bug Type: Bug
Bug description:array_fill/array_fill_keys don't run constructors multiple times
Description:
------------
array_fill() and array_fill_keys() create arrays filled with the same
value, with
unique copies in each value. However if that value is a class, it appears
that
they are all referencing just one value. That is, modifying a value of an
array
created with array_fill/array_fill_keys will modify all the values if that
value
is a class. It is as if the new class construction occurs once, and the
result is
placed in all values of the array being created (whereas if the value were
to be
an integer, string, or array, each value in the created array would be
independent
of the others).
Test script:
---------------
$arr1 = array_fill( 0, 2, array('foo') );
print "\narr1 after array_fill() with array as a
value:\n".print_r($arr1,true);
array_push($arr1[0],'bar');
print "\narr1 after pushing a string onto the first of the arrays in
it:\n".print_r($arr1,true);
class Test {
public $storage = array();
public function __construct($p=null) {
$this->add($p);
}
public function add($p=null) {
if ($p)
$this->storage[] = $p;
}
}
$arr2 = array_fill(0, 2, new Test('foo') );
print "\narr2 after array_fill() with new Test as a
value:\n".print_r($arr2,true);
$arr2[0]->add('bar');
print "\narr2 after adding to the first object in
it:\n".print_r($arr2,true);
Expected result:
----------------
arr1 after array_fill() with array as a value:
Array
(
[0] => Array
(
[0] => foo
)
[1] => Array
(
[0] => foo
)
)
arr1 after pushing a string onto the first of the arrays in it:
Array
(
[0] => Array
(
[0] => foo
[1] => bar
)
[1] => Array
(
[0] => foo
)
)
arr2 after array_fill() with new Test as a value:
Array
(
[0] => Test Object
(
[storage] => Array
(
[0] => foo
)
)
[1] => Test Object
(
[storage] => Array
(
[0] => foo
)
)
)
arr2 after adding to the first object in it:
Array
(
[0] => Test Object
(
[storage] => Array
(
[0] => foo
[1] => bar
)
)
[1] => Test Object
(
[storage] => Array
(
[0] => foo
)
)
)
Actual result:
--------------
arr1 after array_fill() with array as a value:
Array
(
[0] => Array
(
[0] => foo
)
[1] => Array
(
[0] => foo
)
)
arr1 after pushing a string onto the first of the arrays in it:
Array
(
[0] => Array
(
[0] => foo
[1] => bar
)
[1] => Array
(
[0] => foo
)
)
arr2 after array_fill() with new Test as a value:
Array
(
[0] => Test Object
(
[storage] => Array
(
[0] => foo
)
)
[1] => Test Object
(
[storage] => Array
(
[0] => foo
)
)
)
arr2 after adding to the first object in it:
Array
(
[0] => Test Object
(
[storage] => Array
(
[0] => foo
[1] => bar
)
)
[1] => Test Object
(
[storage] => Array
(
[0] => foo
[1] => bar
)
)
)
--
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--
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register_globals:
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