46 lines
1.2 KiB
PHP
46 lines
1.2 KiB
PHP
<?php
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namespace lib;
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class Cache {
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public function get($key) {
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global $_CACHE;
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return $_CACHE[$key];
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}
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public function read($key = 'config') {
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global $DB;
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$value = $DB->getColumn("SELECT v FROM pre_cache WHERE k=:key LIMIT 1", [':key'=>$key]);
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return $value;
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}
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public function save($key ,$value, $expire=0) {
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if (is_array($value)) $value = serialize($value);
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global $DB;
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return $DB->exec("REPLACE INTO pre_cache VALUES (:key, :value, :expire)", [':key'=>$key, ':value'=>$value, ':expire'=>$expire]);
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}
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public function pre_fetch(){
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global $_CACHE;
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$_CACHE=array();
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$cache = $this->read('config');
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$_CACHE = @unserialize($cache);
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if(empty($_CACHE['version']))$_CACHE = $this->update();
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return $_CACHE;
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}
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public function update() {
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global $DB;
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$cache = array();
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$result = $DB->getAll("SELECT * FROM pre_config");
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foreach($result as $row){
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$cache[ $row['k'] ] = $row['v'];
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}
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$this->save('config', $cache);
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return $cache;
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}
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public function clear($key = 'config') {
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global $DB;
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return $DB->exec("UPDATE pre_cache SET v='' WHERE k=:key", [':key'=>$key]);
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}
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public function clean() {
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global $DB;
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return $DB->exec("DELETE FROM pre_cache WHERE expire>0 AND expire<'".time()."'");
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}
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}
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