43     public function load($key)  argument
45         if (file_exists($key)) {
46             @include_once $key;
50     public function write($key, $content)  argument
52         $dir = \dirname($key);
64         $tmpFile = tempnam($dir, basename($key));
65         if (false !== @file_put_contents($tmpFile, $content) && @rename($tmpFile, $key)) {
66             @chmod($key, 0666 & ~umask());
71                     @opcache_invalidate($key, true);
73                     apc_compile_file($key);
80         throw new \RuntimeException(sprintf('Failed to write cache file "%s".', $key));
83     public function getTimestamp($key)  argument
85         if (!file_exists($key)) {
89         return (int) @filemtime($key);