Add comment to cache file driver.
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system/cache/file.php
vendored
2
system/cache/file.php
vendored
@ -29,6 +29,8 @@ class File implements Driver {
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$cache = file_get_contents(CACHE_PATH.$key);
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// The cache expiration date is stored as a UNIX timestamp at the beginning
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// of the cache file. We'll extract it out and check it here.
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if (time() >= substr($cache, 0, 10))
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{
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$this->forget($key);
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