function do_history($chars, $max = 20)
{
require_once 'lib/php-file-cache/fcache.inc.php';
$fcache = new FCache();
$history = $fcache->get('hash_history');
if (!$history) {
$history = array();
}
if (array_key_exists($chars, $history)) {
return array_keys($history);
}
if (count($history) > $max) {
$key_del = array_rand($history, 1);
unset($history[$key_del]);
}
$history[$chars] = '';
$fcache->add('hash_history', $history);
return array_keys($history);
}
public static function updateSystemCache()
{
$setting_file = WEB_ROOT_DIR . self::$cache_file;
// FFile::rmDir(WEB_ROOT_DIR . 'data/system/');
$t = new FTable('setting');
$settings = $t->select();
$setting_write = array();
foreach ($settings as $row) {
$setting_write[$row['setting_key']] = $row['setting_value'];
}
FFile::save($setting_file, "<?php\n" . 'return ' . var_export($setting_write, true) . ';');
FCache::flush();
}
/**
* 获得表结构
* @return array|null
* @throws Exception
*/
public function getTableInfo()
{
$tableInfo = FCache::get($this->_table);
if ($tableInfo) {
return $tableInfo;
}
$sql = "desc {$this->config['table_pre']}{$this->table_raw}";
try {
$this->connect('r');
$stmt = $this->_dbh->prepare($sql);
$stmt->execute();
$rows = $stmt->fetchAll(PDO::FETCH_ASSOC);
$tableInfo = array('pri' => null, 'fields' => null);
foreach ($rows as $row) {
if ($row['Key'] == 'PRI') {
$tableInfo['pri'] = $row['Field'];
}
$tableInfo['fields'][$row['Field']] = $row;
}
FCache::set($this->_table, $tableInfo, 8640000);
} catch (PDOException $e) {
FLogger::write("获取表信息失败: " . $this->_table . "\t{$sql}\t" . $e->getMessage(), 'error');
throw new Exception("获取表信息失败。");
}
return $tableInfo;
}
public static function fetchFirstCached($sql, $cache_time = 3600)
{
$cache_key = "sql-fetchFirst_{$sql}";
$cache_content = FCache::get($cache_key);
if ($cache_content) {
return $cache_content;
}
$cache_content = self::fetchFirst($sql);
FCache::set($cache_key, $cache_content, $cache_time);
return $cache_content;
}
/**
* S
* @access public
* @param string $key
* @param mixed $var
* @param integer $expire
* @return mixed
*/
public static function S($key, $var = null, $expire = 3600)
{
if (empty($key)) {
return null;
}
if (!is_object(self::$_cache)) {
self::$_cache = new static();
}
$num = func_num_args();
if ($num == 1) {
return self::$_cache->get($key);
} elseif ($num > 1) {
return self::$_cache->set($key, $var, $expire);
}
}
}
return false;
}
private function _safe_filename($key)
{
if ($this->_is_valid_key($key)) {
return md5($key);
}
return 'unvalid_cache_key';
}
private function _get_cache_file($key)
{
return $this->cache_path . $this->_safe_filename($key) . $this->cache_extension;
}
}
$cache = new FCache();
if (strlen($cache->get(urlencode($query))) > 0) {
echo $cache->get(urlencode($query)) . '_';
} else {
// 下拉框提示模式 I 第 1 位查询扩展作为主标题
$sugip = array('115.239.211.11', '115.239.211.12', '180.97.33.72', '180.97.33.73');
shuffle($sugip);
// 1. 初始化
$ch = curl_init();
// 2. 设置选项，包括 URL
curl_setopt($ch, CURLOPT_URL, 'http://' . $sugip[0] . '/su?action=opensearch&ie=UTF-8&wd=' . $query);
curl_setopt($ch, CURLOPT_TIMEOUT, 30);
// 设置超时限制防止死循环
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_USERAGENT, $_SERVER['HTTP_USER_AGENT']);
/**
* 获得表结构
* @return array|null
* @throws Exception
*/
private function getTableInfo()
{
$tableInfo = FCache::get($this->_table);
if ($tableInfo) {
return $tableInfo;
}
try {
$sql = "desc {$this->_table}";
$this->connect(FDB::$DB_READ);
$stmt = $this->_dbh->prepare($sql);
$stmt->execute();
$rows = $stmt->fetchAll(PDO::FETCH_ASSOC);
$tableInfo = array('pri' => null, 'fields' => null);
foreach ($rows as $row) {
if ($row['Key'] == 'PRI') {
$tableInfo['pri'] = $row['Field'];
}
}
$tableInfo['fields'] = $rows;
FCache::set($this->_table, $tableInfo, 8640000);
} catch (PDOException $e) {
FLogger::write("获取表信息失败: " . $this->_table . "\t" . $e->getMessage());
throw new Exception("获取表信息失败。");
}
return $tableInfo;
}
<?php
require_once 'fcache.inc.php';
//example
$cache = new FCache();
$storeData = array('time' => time(), 'str' => 'test', 'int' => 1321);
$cache->add('select * from table;', $storeData);
$cache->add('select * from table;', $storeData);
$cache->add('select * from table;', $storeData);
$cache->add('select * from table;', $storeData);
print_r($storeData = $cache->get('select * from table;'));
$cache->delete('select * from table;');
print_r($cache->get('select * from table;') ? 'exist' : 'has no cache');
$cache->add('select * from table1;', 123);
$cache->add('select * from table2;', 234);
$cache->add('select * from table3;', 345);
$cache->flush();
print_r($cache->get('select * from table3;') ? 'exist' : 'has no cache');
/**
* 获取access_token
*/
public function checkAuth()
{
// 从缓存中获取access_token
$cacheKey = 'weixin_access_token';
$access_token = FCache::get($cacheKey);
if ($access_token) {
$this->access_token = $access_token;
return true;
}
// 请求微信服务器获取access_token
$result = $this->https_request(self::API_URL_PREFIX . self::AUTH_URL . 'appid=' . $this->appid . '&secret=' . $this->appsecret);
if ($result) {
$jsonArr = json_decode($result, true);
if (!$jsonArr || isset($jsonArr['errcode']) && $jsonArr['errcode'] > 0) {
$this->error($jsonArr);
} else {
$this->access_token = $jsonArr['access_token'];
$expire = isset($jsonArr['expires_in']) ? intval($jsonArr['expires_in']) - 100 : 3600;
// 将access_token保存到缓存中
FCache::set($cacheKey, $this->access_token, $expire);
return true;
}
}
return false;
}