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vendor/symfony/http-kernel/CacheWarmer/CacheWarmer.php

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+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\HttpKernel\CacheWarmer;
+
+/**
+ * Abstract cache warmer that knows how to write a file to the cache.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+abstract class CacheWarmer implements CacheWarmerInterface
+{
+    /**
+     * @return void
+     */
+    protected function writeCacheFile(string $file, $content)
+    {
+        $tmpFile = @tempnam(\dirname($file), basename($file));
+        if (false !== @file_put_contents($tmpFile, $content) && @rename($tmpFile, $file)) {
+            @chmod($file, 0666 & ~umask());
+
+            return;
+        }
+
+        throw new \RuntimeException(sprintf('Failed to write cache file "%s".', $file));
+    }
+}