Re: Hashtables
| From: | Derick Rethans | Date: | Sat, 30 Nov 2002 18:30:54 +0000 |
| Subject: | Re: Hashtables | ||
| References: | 1 | Groups: | php.dev |
| Request: | Send a blank email to php-dev+get-91962@lists.php.net to get a copy of this message | ||
On Sat, 30 Nov 2002, John Coggeshall wrote:
>
> Hey all
>
> I was playing around and I'm running into a problem with a hashtable...
> Basically, it's segfaulting my code :) Specifically, I'm trying to
> return the number of items in the hash...
>
> if(zend_hash_num_elements(hash) == 0)
>
> Which causes the following:
>
> Program received signal SIGSEGV, Segmentation fault.
> zend_hash_num_elements (ht=0x0) at /home/php/php4/Zend/zend_hash.c:988
> 988 return ht->nNumOfElements;
You need to check if your ht actually is initialized, at the moment it
is NULL, and if you want to dereference that, you get a segfault.
if (!hash || (zend_hash_num_elements(hash) == 0)) {
}
should work.
Derick
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