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

one more :

$a = array('b' => "test");
$b = new ArrayObject($a);
var_dump(isset($b->b));

outputed : bool(false)

should this be true?

This bug has been fixed in SVN.

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http://snaps.php.net/.

 For Windows:

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