_checkAndBuildStructure example

    /** * Test if a cache is available for the given id and (if yes) return it (false else) * * @param string $id Cache id * @param boolean $doNotTestCacheValidity If set to true, the cache validity won't be tested * @return string|false Cached datas */
    public function load($id, $doNotTestCacheValidity = false)
    {
        $this->_checkAndBuildStructure();
        $sql = "SELECT content FROM cache WHERE id='$id'";
        if (!$doNotTestCacheValidity) {
            $sql = $sql . " AND (expire=0 OR expire>" . time() . ')';
        }
        $result = $this->_query($sql);
        $row = @sqlite_fetch_array($result);
        if ($row) {
            return $row['content'];
        }
        return false;
    }