Bug #61347 [Com]: inconsist isset behavior of Arrayobject

From: Date: Sun, 11 Mar 2012 05:38:30 +0000
Subject: Bug #61347 [Com]: inconsist isset behavior of Arrayobject
References: 1  Groups: php.bugs 
Request: Send a blank email to php-bugs+get-168346@lists.php.net to get a copy of this message 
Edit report at https://bugs.php.net/bug.php?id=61347&edit=1

 ID:                 61347
 Comment by:         laruence@php.net
 Reported by:        laruence@php.net
 Summary:            inconsist isset behavior of Arrayobject
 Status:             Open
 Type:               Bug
 Package:            SPL related
 PHP Version:        Irrelevant
 Block user comment: N
 Private report:     N

 New Comment:

these codes are weired(spl_array.c:603):
    switch(Z_TYPE_P(offset)) {
    case IS_STRING:
        if (check_empty) {
            if (zend_symtable_find(spl_array_get_hash_table(intern, 0 
TSRMLS_CC), Z_STRVAL_P(offset), Z_STRLEN_P(offset)+1, (void **) &tmp) != 
FAILURE) {
                switch (check_empty) {
                    case 0:
                        return Z_TYPE_PP(tmp) != IS_NULL;
                    case 2:
                        return 1;
                    default:
                        return zend_is_true(*tmp);
                }
            }
            return 0;
        } else {
            return zend_symtable_exists(spl_array_get_hash_table(intern, 0 
TSRMLS_CC), Z_STRVAL_P(offset), Z_STRLEN_P(offset)+1);
        }


note the switch statement, there is no chance check_empty will be 0, since there 
is a if(check_empty) before.

and, I don't see any chance that the check_empty could be 2. 

any idea? thanks


Previous Comments:
------------------------------------------------------------------------
[2012-03-11 05:17:21] laruence@php.net

Description:
------------
isset(arrayobject['index']) act inconsistently with isset(array['index'])

Test script:
---------------
<?php
$a = array('b' => NULL);
var_dump(isset($a['b']));

$b = new ArrayObject($a);
var_dump(isset($b['b']));

Expected result:
----------------
bool(false)
bool(false)

Actual result:
--------------
bool(false)
bool(true)


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



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Edit this bug report at https://bugs.php.net/bug.php?id=61347&edit=1

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