add OpCacheCheck

src/Checks/OpCacheCheck.php

@@ -0,0 +1,31 @@
+<?php
+
+namespace Vormkracht10\LaravelOK\Checks;
+
+use Vormkracht10\LaravelOK\Checks\Base\Check;
+use Vormkracht10\LaravelOK\Checks\Base\Result;
+
+class OpCacheCheck extends Check
+{
+    public function run(): Result
+    {
+        $result = Result::new();
+
+        if (! $this->opCacheIsRunning()) {
+            return $result->failed('OpCache is not running.');
+        }
+
+        return $result->ok('OpCache is running.');
+    }
+
+    protected function opCacheIsRunning(): bool
+    {
+        if (! function_exists('opcache_get_status')) {
+            return false;
+        }
+
+        $configuration = opcache_get_status();
+
+        return $configuration['opcache_enabled'] ?? false;
+    }
+}