PhpFastCache object analyzer with Redis Driver

cached-object-count.php

<?php

// https://github.com/PHPSocialNetwork/phpfastcache/blob/master/lib/Phpfastcache/Core/Pool/ExtendedCacheItemPoolInterface.php#L49-L64
const DATA_WRAPPER_INDEX = 'd';

// https://github.com/phpredis/phpredis#get
$redis = new Redis();
$redis->connect('127.0.0.1', 6379);
$redis->setOption(Redis::OPT_SCAN, Redis::SCAN_RETRY);

$classList = [];
$it = NULL;
while ($arr_keys = $redis->scan($it)) {
    foreach ($arr_keys as $key) {
        if ($redis->type($key) !== Redis::REDIS_STRING) {
            continue;
        }
        $value = unserialize($redis->get($key));
        if (!is_array($value) || !array_key_exists(DATA_WRAPPER_INDEX, $value)) {
            continue;
        }
        if (!is_object($value[DATA_WRAPPER_INDEX]) || get_class($value[DATA_WRAPPER_INDEX]) !== '__PHP_Incomplete_Class') {
            continue;
        }
        $className = ((array)$value[DATA_WRAPPER_INDEX])['__PHP_Incomplete_Class_Name'];
        $classList[$className] = ($classList[$className] ?? 0) + 1;
    }
    // Show progress
    echo '.';
}

asort($classList);
var_dump($classList);