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<?php
/**
* cache api
*/
class Cache {
public static function get($key){
$r = q("SELECT `v` FROM `cache` WHERE `k`='%s' limit 1",
dbesc($key)
);
if (count($r)) return $r[0]['v'];
return null;
}
public static function set($key,$value) {
q("REPLACE INTO `cache` (`k`,`v`,`updated`) VALUES ('%s','%s','%s')",
dbesc($key),
dbesc($value),
dbesc(datetime_convert()));
}
/*
*
* Leaving this legacy code temporaily to see how REPLACE fares
* as opposed to non-atomic checks when faced with fast moving key duplication.
* As a MySQL extension it isn't portable, but we're not yet very portable.
*/
/*
* $r = q("SELECT * FROM `cache` WHERE `k`='%s' limit 1",
* dbesc($key)
* );
* if(count($r)) {
* q("UPDATE `cache` SET `v` = '%s', `updated = '%s' WHERE `k` = '%s' limit 1",
* dbesc($value),
* dbesc(datetime_convert()),
* dbesc($key));
* }
* else {
* q("INSERT INTO `cache` (`k`,`v`,`updated`) VALUES ('%s','%s','%s')",
* dbesc($key),
* dbesc($value),
* dbesc(datetime_convert()));
* }
* }
*/
public static function clear(){
q("DELETE FROM `cache` WHERE `updated` < '%s'",
dbesc(datetime_convert('UTC','UTC',"now - 30 days")));
}
}
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