<?php
if (!extension_loaded('Zend OPcache')) {
    echo json_encode(['status' => 'not_installed']);
    exit(1);
}

if (!ini_get('opcache.enable')) {
    echo json_encode(['status' => 'disabled']);
    exit(1);
}

$status = opcache_get_status(false);
if ($status === false) {
    echo json_encode(['status' => 'error', 'message' => 'Cannot retrieve OPCache status']);
    exit(1);
}

echo json_encode([
    'status' => 'enabled',
    'enabled' => $status['opcache_enabled'],
    'memory_usage' => [
        'used' => round($status['memory_usage']['used_memory'] / 1024 / 1024, 2),
        'free' => round($status['memory_usage']['free_memory'] / 1024 / 1024, 2),
        'wasted' => round($status['memory_usage']['wasted_memory'] / 1024 / 1024, 2)
    ],
    'statistics' => [
        'hits' => $status['opcache_statistics']['hits'],
        'misses' => $status['opcache_statistics']['misses'],
        'hit_rate' => round($status['opcache_statistics']['opcache_hit_rate'], 2)
    ]
]);