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<?php /** @file */
namespace Zotlabs\Lib;
/**
* cache api
*/
class Cache {
/**
* @brief Returns cached content
*
* @param string $key
* @param string $age in SQL format, default is '30 DAY'
* @return string
*/
public static function get($key, $age = '') {
// $hash = hash('whirlpool',$key);
$hash = uuid_from_url($key);
$r = q("SELECT v FROM cache WHERE k = '%s' AND updated > %s - INTERVAL %s LIMIT 1",
dbesc($hash),
db_utcnow(),
db_quoteinterval(($age ? $age : get_config('system','object_cache_days', '30') . ' DAY'))
);
if ($r)
return $r[0]['v'];
return null;
}
public static function set($key,$value) {
// $hash = hash('whirlpool',$key);
$hash = uuid_from_url($key);
$r = q("SELECT * FROM cache WHERE k = '%s' LIMIT 1",
dbesc($hash)
);
if($r) {
q("UPDATE cache SET v = '%s', updated = '%s' WHERE k = '%s'",
dbesc($value),
dbesc(datetime_convert()),
dbesc($hash)
);
}
else {
q("INSERT INTO cache (k, v, updated) VALUES ('%s', '%s', '%s')",
dbesc($hash),
dbesc($value),
dbesc(datetime_convert())
);
}
}
}
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