Detect if APCu is enabled

[heruan]

How to detect if APCu is enabled? I have a factory method which takes care of providing the best cache instance available. Weather I run it from Apache or CLI, I need to detect if ACPu is enabled. With the former APC I could check it with function_exists('apc_fetch') or class_exists('APCIterator') but now they return true even if apc.enabled and/or apc.enable_cli are set to false.

[nsams]

I use extension_loaded('apcu')

though that won't help for enable_cli=false I guess.

[krakjoe]

I've seen this by the way, super busy at the minute ... thinking about it ...

[remicollet]

Here is an example, used in ZendFramework

    if (version_compare('3.1.6', phpversion('apc')) > 0) {
        throw new Exception\ExtensionNotLoadedException("Missing ext/apc >= 3.1.6");
    }

    $enabled = ini_get('apc.enabled');
    if (PHP_SAPI == 'cli') {
        $enabled = $enabled && (bool) ini_get('apc.enable_cli');
    }

    if (!$enabled) {
        throw new Exception\ExtensionNotLoadedException(
            "ext/apc is disabled - see 'apc.enabled' and 'apc.enable_cli'"
        );
    }

This seems a bit uggly.
Of course a nice API for this could be interesting (except for the time it will require to be adopted...)

[krakjoe]

Good point, APCu versions start at 4, thanks @remicollet