What's wrong with these hashtable iteration code?

10 years ago by Aaron Lewis — view source

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Hi,

I'm trying to iterate through a hash table,

But the zend_hash_get_current_key() doesn't seem to move forward:
I'm getting duplicate output at the 'fprintf' part.

   for(zend_hash_internal_pointer_reset_ex(ht, &pos);
            zend_hash_has_more_elements_ex(ht, &pos) == SUCCESS;
            zend_hash_move_forward_ex(ht, &pos))
    {
        if (zend_hash_get_current_key (ht, &string_key, &num_key, 0)
                != HASH_KEY_IS_STRING)
            continue;

        fprintf (stderr, "string key: %s\n", string_key);
    }

Any ideas?

--
Best Regards,
Aaron Lewis - PGP: 0x13714D33 - http://pgp.mit.edu/
Finger Print: 9F67 391B B770 8FF6 99DC D92D 87F6 2602 1371 4D33

10 years ago by Tjerk Meesters — view source

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On Mon, Jul 21, 2014 at 11:12 AM, Aaron Lewis
wrote:

> Hi,
>
> I'm trying to iterate through a hash table,
>
> But the zend_hash_get_current_key() doesn't seem to move forward:
> I'm getting duplicate output at the 'fprintf' part.
>
> for(zend_hash_internal_pointer_reset_ex(ht, &pos);
> zend_hash_has_more_elements_ex(ht, &pos) == SUCCESS;
> zend_hash_move_forward_ex(ht, &pos))
> {
> if (zend_hash_get_current_key (ht, &string_key, &num_key, 0)
> != HASH_KEY_IS_STRING)
> continue;
>
> fprintf (stderr, "string key: %s\n", string_key);
> }
>

The _ex() hash iteration functions allow for iterating a hash without
modifying its internal pointer, but zend_hash_get_current_key() uses only
the internal pointer.

The function you need to use is: zend_hash_get_current_key_ex() and pass
&pos to it.

>
> Any ideas?
>
>
> --
> Best Regards,
> Aaron Lewis - PGP: 0x13714D33 - http://pgp.mit.edu/
> Finger Print: 9F67 391B B770 8FF6 99DC D92D 87F6 2602 1371 4D33
>
> --
>
>
>
>

--
--
Tjerk