ID: 25494
User updated by: enygma at phpdeveloper dot org
Reported By: enygma at phpdeveloper dot org
Status: Bogus
Bug Type: Arrays related
Operating System: Red Hat Linux
PHP Version: 4.3.2
New Comment:

it still seems silly to me that a string passed into an array function
was taken without so much as a warning. even more strange that it was
suddenly treated as an array and merged into the other valid array.

maybe a warning would be enough to deter this in the future?


Previous Comments:
------------------------------------------------------------------------

[2003-09-11 11:42:26] [email]jayphp.net[/email]

If you use var_dump() in place of print_r(), you'd see
that it's not a mysterious value, it's 'false'. The
boolean value is being converted to an array index in
array_merge(). (Any value would produce similar results --
$array1=4; would produce an array value of
$last_array[0]==4.)

array_intersect() does a type check before it does
anything, which is why the warning comes up.

While it seems inconsistent, I can't see this being
changed because it would affect BC (albeit BC on a
somewhat obscure, undoented feature). Somebody correct
me here if I'm wrong. So I'm bogusing it for now.

J

------------------------------------------------------------------------

[2003-09-11 11:42:19] [email]andreyphp.net[/email]

1. Please use var_dump() instead of print_r()
2. The value in the merged array is (bool) false

------------------------------------------------------------------------

[2003-09-11 10:59:27] enygma at phpdeveloper dot org

array_merge_recursive() shows the same behavior
array_intersect(), however, doesn't and gives a correct warning message

------------------------------------------------------------------------

[2003-09-11 10:57:27] enygma at phpdeveloper dot org

Description:
------------
Code:
---------------------------------------
$array1=false;
$array2=array("test"=>"1","testing"=>"2");
$last_array=array_merge($array1,$array2);
echo "<pre>"; print_r($last_array); echo "</pre>";
---------------------------------------

Result:
---------------------------------------
Array
(
[0] =>
[test] => 1
[testing] => 2
)
---------------------------------------

Please note that not only does array_merge allow the "false" to be
passed in, but when it is, a mysterious [0] appears in the results
(null array value?)

Reproduce code:
---------------
<?php
$array1=false;
$array2=array("test"=>"1","testing"=>"2");
$last_array=array_merge($array1,$array2);
echo "<pre>"; print_r($last_array); echo "</pre>";
?>

Expected result:
----------------
Either an "invalid argument" for the "false" being passed in, or no
extra Null array value appended to the resulting array.

Actual result:
--------------
Array
(
[0] =>
[test] => 1
[testing] => 2
)


------------------------------------------------------------------------


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Edit this bug report at [url]http://bugs.php.net/?id=25494&edit=1[/url]