72 lines
1.8 KiB
PHP
72 lines
1.8 KiB
PHP
<?php
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/**
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* cache api
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*/
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class Cache {
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public static function get($key) {
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$r = q("SELECT `v` FROM `cache` WHERE `k`='%s' limit 1",
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dbesc($key)
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);
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if (count($r))
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return $r[0]['v'];
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return null;
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}
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public static function set($key,$value, $duration = CACHE_MONTH) {
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q("REPLACE INTO `cache` (`k`,`v`,`expire_mode`,`updated`) VALUES ('%s','%s',%d,'%s')",
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dbesc($key),
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dbesc($value),
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intval($duration),
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dbesc(datetime_convert()));
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}
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/*
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*
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* Leaving this legacy code temporaily to see how REPLACE fares
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* as opposed to non-atomic checks when faced with fast moving key duplication.
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* As a MySQL extension it isn't portable, but we're not yet very portable.
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*/
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/*
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* $r = q("SELECT * FROM `cache` WHERE `k`='%s' limit 1",
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* dbesc($key)
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* );
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* if(count($r)) {
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* q("UPDATE `cache` SET `v` = '%s', `updated = '%s' WHERE `k` = '%s'",
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* dbesc($value),
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* dbesc(datetime_convert()),
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* dbesc($key));
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* }
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* else {
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* q("INSERT INTO `cache` (`k`,`v`,`updated`) VALUES ('%s','%s','%s')",
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* dbesc($key),
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* dbesc($value),
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* dbesc(datetime_convert()));
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* }
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* }
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*/
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public static function clear(){
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q("DELETE FROM `cache` WHERE `updated` < '%s' AND `expire_mode` = %d",
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dbesc(datetime_convert('UTC','UTC',"now - 30 days")), intval(CACHE_MONTH));
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q("DELETE FROM `cache` WHERE `updated` < '%s' AND `expire_mode` = %d",
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dbesc(datetime_convert('UTC','UTC',"now - 7 days")), intval(CACHE_WEEK));
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q("DELETE FROM `cache` WHERE `updated` < '%s' AND `expire_mode` = %d",
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dbesc(datetime_convert('UTC','UTC',"now - 1 days")), intval(CACHE_DAY));
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q("DELETE FROM `cache` WHERE `updated` < '%s' AND `expire_mode` = %d",
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dbesc(datetime_convert('UTC','UTC',"now - 1 hours")), intval(CACHE_HOUR));
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}
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}
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