My only argument against the apc_exists() functionality would be that it could add more kludge to the API, but if there's a need for it it's simple enough to add.  Any objections by any1 else?


APCIterator will also accept an array of keys to find (rather than a regex).  ie:

$it = new APCIterator('user', array($key), APC_ITER_ALL, 1, APC_LIST_ACTIVE);

Does this solve your apc_info use case?

hi shire,

Ok, I didn't know before that the second parameter also accept an array, thats better. It isn't perfect anyway to get additional information about only one item.
There is a lot overhead:
- no need to instantiate an object
- no need to iterate over one item
- no need to search a list if items (regexp or array)
- no need to call "valid()" if the requested item was found
  (a simple "$info === false" is enough)

I know that this functionality is rarely used but in my opinion it is really important.

There is a non-locking implementation of apc_exists() in 
trunk now.  Give it a try.

Thanks for the quick implementation.

- With a single key it seems to work fine :)
- With an array of keys it returns false ever :(
- With APCIterator a fatal error is occured
  Is it hard to implement APCIterator as argument like apc_delete, too ?


Test Script:
apc_store('id1', 'data1');
apc_store('id2', 'data2');

var_dump( apc_exists('id1') );
var_dump( apc_exists('id2') );

var_dump( apc_exists(array('id1', 'id2')) );

var_dump( apc_exists(new APCIterator('/^id[12]$/', APC_ITER_NONE, 1, APC_LIST_ACTIVE)) );

Output:
bool(true)
bool(true)
bool(false)
PHP Catchable fatal error:  Object of class APCIterator could not be converted to string ...

Ops sorry here is a fix of my last test script (The result is the same):

- var_dump( apc_exists(new APCIterator('/^id[12]$/', APC_ITER_NONE, 1,
APC_LIST_ACTIVE)) );
+ var_dump( apc_exists(new APCIterator('user', '/^id[12]$/', APC_ITER_NONE, 1,
APC_LIST_ACTIVE)) );

I don't see why you would pass an APCIterator class to apc_exists() here.  APCIterator will allow you to iterate over all the keys that existed matching that regex.

Yes you are right. It was a stupid idea.

Try it again, the array case should be working now.

It's working now. Thanks

I noticed that, if the key doesn't exist, apc_exists returns NULL instead of false.

Is this a bug or intended ?

This bug has been fixed in SVN.

In case this was a documentation problem, the fix will show up at the
end of next Sunday (CET) on pecl.php.net.

In case this was a pecl.php.net website problem, the change will show
up on the website in short time.
 
Thank you for the report, and for helping us make PECL better.

I have changed apc_exists() to return false if it should fail

apc_exists('foo'), this type of command is not working me. It says: 
Fatal error: Call to undefined function apc_exists() in ******  on line 46

it's on svn trunk: http://svn.php.net/repository/pecl/apc/trunk