Edit report at http://bugs.php.net/bug.php?id=52194&edit=1
ID: 52194
User updated by: bubi1 at mailinator dot com
Reported by: bubi1 at mailinator dot com
Summary: incorrect behaviour when printing non existend array
index
Status: Bogus
Type: Bug
Package: *General Issues
Operating System: all
PHP Version: 5.3.2
New Comment:
Yes, you are righ, i have found that.
"Warning
[...] Non-integer types are converted to integer. [...]"
However i find this behavior a bit strange. If the string is an array,
it should behave as an array, and generate an error on a non existend
key.
Otherwise, if do not know if $arr is a string or array, i have to use 3
functions for checking the existence of a value: is_array($arr) &&
array_key_exists('smth', $arr) && isset($arr['smth']), when i could
simply use isset($arr['smth']) if things worked as expected.
But ok, nevermind. A documented bug is a feature :)
Sorry for opening this thread.
Previous Comments:
------------------------------------------------------------------------
[2010-06-26 19:56:41] [email protected]
Because non-integer keys are converted to integers. Everything is
explained here:
http://www.php.net/manual/en/language.types.string.php
------------------------------------------------------------------------
[2010-06-26 19:44:45] bubi1 at mailinator dot com
Yes, i know that a string is an array of chars. Maybe i'm wrong,but i
remember once only the syntax $string{0} was working, non $string[0]
also.
Anyway, why this works?
php -r '$arr = 'test';var_dump($arr['rasmus']);'
still prints "t".
There is no key called "rasmus" in the $arr string...
------------------------------------------------------------------------
[2010-06-26 19:12:01] [email protected]
A string is an array of characters. You have:
$arr[0] = "test";
Therefore array index 0 on that string is:
$arr[0][0] which very logically is "t"
------------------------------------------------------------------------
[2010-06-26 18:29:04] bubi1 at mailinator dot com
Description:
------------
The code below is self explaining.
Test script:
---------------
php -r '$arr =
array('test');var_dump($arr[0][0]);var_dump(isset($arr[0][0]));'
Expected result:
----------------
NULL
bool(false)
Actual result:
--------------
string(1) "t"
bool(true)
------------------------------------------------------------------------
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Edit this bug report at http://bugs.php.net/bug.php?id=52194&edit=1
