function pdb_get_data($key, $provider, $arguments = [])
{
$mc_handler = memcache_pconnect(MC_HOST);
$value = memcache_get($mc_handler, $key);
if ($value !== false) {
return $value;
} else {
$locking_key = 'lock_' . $key;
$locking_value = microtime(true);
for ($i = 0; $i < MC_LOCK_DELAY * 1000 / MC_SLEEP_TIME + 1; $i++) {
$lock = memcache_add($mc_handler, $locking_key, $locking_value, 0, MC_LOCK_DELAY);
if ($lock) {
$value = call_user_func_array($provider, $arguments);
memcache_set($mc_handler, $key, $value);
memcache_delete($mc_handler, $locking_key);
return $value;
} else {
usleep(MC_SLEEP_TIME);
$value = memcache_get($mc_handler, $key);
if ($value != false) {
return $value;
}
}
}
}
return call_user_func_array($provider, $arguments);
}
function cache_delete($key, $timeout = 0)
{
$connection = cache_connect();
$res = memcache_delete($connection, (string) $key, (int) $timeout);
memcache_close($connection);
return $res;
}
public function delete($name)
{
if (!is_resource($this->memcache)) {
throw new \Exception("Memcached can't connect.");
}
return memcache_delete($this->memcache, $name);
}
function cache_delete($key)
{
if (!cache_connect()) {
return false;
}
return memcache_delete(object('memcache'), $GLOBALS['config']['service']['server'] . '/' . $key);
}
public function delItem($key)
{
if (empty($key)) {
throw new CacheException('CACHE ERROR:key is empty');
}
return memcache_delete($this->cache, $key);
}
function process_request()
{
$item_id = isset($_POST['item_id']) ? intval($_POST['item_id']) : null;
$item_name = isset($_POST['item_name']) ? $_POST['item_name'] : null;
$item_price = isset($_POST['item_price']) ? $_POST['item_price'] : null;
$item_description = isset($_POST['item_description']) ? $_POST['item_description'] : null;
$item_img = isset($_POST['item_img']) ? $_POST['item_img'] : null;
if (is_null($item_id) || $item_id <= 0) {
die;
}
if (!is_null($item_name)) {
$item_name = htmlspecialchars(trim($item_name));
if ($item_name === '') {
die;
}
}
if (!is_null($item_price)) {
if (!preg_match("/^\\d+([.,]\\d{1,2})?\$/", $item_price)) {
die;
}
}
if (!is_null($item_description)) {
$item_description = htmlspecialchars(trim($item_description));
}
$item = db_get_item($item_id);
if (!$item) {
die;
}
$values = [];
if (!is_null($item_name)) {
$values['name'] = $item_name;
}
if (!is_null($item_price)) {
$item_price = str_replace(',', '.', $item_price);
$values['price'] = $item_price;
}
if (!is_null($item_description)) {
$values['description'] = $item_description;
}
if (!is_null($item_img)) {
$values['imgurl'] = $item_img;
}
if (!empty($values)) {
db_update_item($item_id, $values);
$mc_handler = memcache_connect('localhost');
memcache_delete($mc_handler, get_page_cache_key($item_id));
$min_price = min($item_price, $item['price']);
pagination_rebuild_ids($mc_handler, $item_id, 1);
if ($item_price == $item['price']) {
$edited_pages_amount = 1;
} else {
$edited_pages_amount = 0;
}
pagination_rebuild_prices($mc_handler, $min_price, $edited_pages_amount);
pagination_rebuild_prices($mc_handler, $min_price);
}
header('Location: /view_item.php?id=' . $item_id);
}
function memcache_version_del($memcache_obj, $key)
{
global $config;
if ($config['mcache']['version'] == 0) {
return memcache_delete($memcache_obj, $key);
} else {
return $memcache_obj->delete($key);
}
}
static function register_static_delete($key)
{
$mmc = memcache_init();
if ($mmc == false) {
echo "那个坑爹的Memcache加载失败啦！笨蛋！\n";
} else {
memcache_delete($mmc, $key);
return 1;
}
}
function SaeMemcacheDelete($key)
{
//如果长度超出，则取末尾的234位
if (strlen($key) > 234) {
$key = substr($key, -234);
}
$mmc = memcache_init();
if ($mmc == false) {
return false;
} else {
return memcache_delete($mmc, $key);
}
}
function delete_search_keys()
{
$dbh = new PDO('mysql:dbname=' . AppConfig::gacv("AC_db") . ';host=' . AppConfig::gacv("AC_server"), AppConfig::gacv("AC_user"), AppConfig::gacv("AC_pass"));
$memcache_obj = memcache_pconnect('localhost', 11211);
$sql = sprintf("select search_key from %s ", "memcache_search_keys");
$sth = $dbh->prepare($sql, array(PDO::ATTR_CURSOR, PDO::CURSOR_FWDONLY));
//
$sth->execute();
$res = $sth->fetchAll(PDO::FETCH_BOTH);
//echo $sql.$this->lookup_tbl_id_col;//
foreach ($res as $ar) {
memcache_delete($memcache_obj, $ar["search_key"], 0);
}
/* Delete all rows from the FRUIT table */
$count = $dbh->exec("DELETE FROM memcache_search_keys");
}
public function del($key)
{
if (FALSE == $this->mc) {
if (FALSE == $this->connect()) {
return FALSE;
}
}
$key = $this->keys_prefix . $key;
if ($this->debug_mode) {
$time = microtime(TRUE);
$res = memcache_delete($this->mc, $key);
$time = microtime(TRUE) - $time;
$this->debug_info->time += $time;
$this->debug_info->queries[] = (object) array('action' => 'DELETE', 'key' => $key, 'result' => $res ? 'TRUE' : 'FALSE', 'time' => number_format($time, 5, '.', ''));
return $res;
}
return memcache_delete($this->mc, $key);
}
public static function delete($key, $name = 'default')
{
if (!App::instance()->get('cache_enable')) {
return TRUE;
}
$client = self::client($key, $name);
$ndx = self::$prefix . '_' . $key;
switch (self::$engine) {
case 'apc':
return apc_delete($ndx);
case 'redis':
return $client->del($ndx);
break;
case 'memcache':
return memcache_delete($client, $ndx);
break;
default:
return @unlink($client . DS . $ndx);
}
return TRUE;
}
function process_request()
{
$item_id = isset($_GET['item_id']) ? intval($_GET['item_id']) : false;
if ($item_id == false || $item_id <= 0) {
api_wrong_args();
return;
}
$item = db_get_item($item_id);
if (!$item) {
api_echo_as_json("Item not found", 'msg');
return;
}
db_delete_item($item_id);
$mc_handler = memcache_connect('localhost');
pagination_rebuild_ids($mc_handler, $item['id']);
pagination_rebuild_prices($mc_handler, $item['price']);
if (memcache_get($mc_handler, 'total_rows') !== false) {
memcache_decrement($mc_handler, 'total_rows');
}
api_echo_as_json('Item deleted', 'msg');
memcache_delete($mc_handler, "item_" . $item_id);
}
<?php
header("Content-Type:text/html;charset=utf-8");
require_once 'Mysql.class.php';
/**
* 要删除的用户
*/
$openid = "osvGYs3ntLy0YDpOxfLK-Duj3r50";
$sqlStr1 = "delete from tb_studentInfo where openid='{$openid}'";
//删除学生信息表
$sqlStr2 = "delete from tb_studentScore where openid='{$openid}'";
//删除学生成绩表
$sqlStr3 = "delete from tb_studentSyllabus where openid='{$openid}'";
//删除学生课表
$mmc = memcache_init();
$class_mysqlObj = new Class_mysql();
if ($class_mysqlObj->query($sqlStr1) && $class_mysqlObj->query($sqlStr2) && $class_mysqlObj->query($sqlStr3)) {
if (memcache_delete($mmc, $openid . "password") && memcache_delete($mmc, $openid . "zjh")) {
echo "该学生删除成功";
} else {
echo "删除缓存失败";
}
} else {
echo "删除数据库信息失败";
}
public function memCacheDelete($key)
{
$key = $this->mckeyPre . $key;
return memcache_delete($this->mc, $key);
}
/**
* 删除内存内容.
*
* @author dolphin
*
* @param string $key 内容KEY
*
* @return boolean布尔值(真|假)
*/
function delete_memcache_data($key)
{
if (function_exists('memcache_connect')) {
$memcache_object1 = @memcache_connect($GLOBALS['memcache_server1'], $GLOBALS['memcache_port']);
$memcache_object2 = @memcache_connect($GLOBALS['memcache_server2'], $GLOBALS['memcache_port']);
}
if (is_object($memcache_object1)) {
memcache_delete($memcache_object1, $key);
}
if (is_object($memcache_object2)) {
memcache_delete($memcache_object2, $key);
}
return true;
}
/**
* @inheritDoc
* @param String $key
*/
public function delete($key)
{
$this->check();
@memcache_delete($this->connection, $key);
}
/**
* Clear contents of cache backend
* @return bool
* @param $suffix string
* @param $lifetime int
**/
function reset($suffix = NULL, $lifetime = 0)
{
if (!$this->dsn) {
return TRUE;
}
$regex = '/' . preg_quote($this->prefix . '.', '/') . '.+?' . preg_quote($suffix, '/') . '/';
$parts = explode('=', $this->dsn, 2);
switch ($parts[0]) {
case 'apc':
$info = apc_cache_info('user');
foreach ($info['cache_list'] as $item) {
if (preg_match($regex, $item['info']) && $item['mtime'] + $lifetime < time()) {
apc_delete($item['info']);
}
}
return TRUE;
case 'memcache':
foreach (memcache_get_extended_stats($this->ref, 'slabs') as $slabs) {
foreach (array_filter(array_keys($slabs), 'is_numeric') as $id) {
foreach (memcache_get_extended_stats($this->ref, 'cachedump', $id) as $data) {
if (is_array($data)) {
foreach ($data as $key => $val) {
if (preg_match($regex, $key) && $val[1] + $lifetime < time()) {
memcache_delete($this->ref, $key);
}
}
}
}
}
}
return TRUE;
case 'wincache':
$info = wincache_ucache_info();
foreach ($info['ucache_entries'] as $item) {
if (preg_match($regex, $item['key_name']) && $item['use_time'] + $lifetime < time()) {
apc_delete($item['key_name']);
}
}
return TRUE;
case 'xcache':
return TRUE;
/* Not supported */
/* Not supported */
case 'folder':
if ($glob = @glob($parts[1] . '*')) {
foreach ($glob as $file) {
if (preg_match($regex, basename($file)) && filemtime($file) + $lifetime < time()) {
@unlink($file);
}
}
}
return TRUE;
}
return FALSE;
}
/**
* Clear contents of cache backend
* @return bool
* @param $suffix string
* @param $lifetime int
**/
function reset($suffix = NULL, $lifetime = 0)
{
if (!$this->dsn) {
return TRUE;
}
$regex = '/' . preg_quote($this->prefix . '.', '/') . '.+?' . preg_quote($suffix, '/') . '/';
$parts = explode('=', $this->dsn, 2);
switch ($parts[0]) {
case 'apc':
case 'apcu':
$info = apc_cache_info('user');
if (!empty($info['cache_list'])) {
$key = array_key_exists('info', $info['cache_list'][0]) ? 'info' : 'key';
$mtkey = array_key_exists('mtime', $info['cache_list'][0]) ? 'mtime' : 'modification_time';
foreach ($info['cache_list'] as $item) {
if (preg_match($regex, $item[$key]) && $item[$mtkey] + $lifetime < time()) {
apc_delete($item[$key]);
}
}
}
return TRUE;
case 'redis':
$fw = Base::instance();
$keys = $this->ref->keys($this->prefix . '.*' . $suffix);
foreach ($keys as $key) {
$val = $fw->unserialize($this->ref->get($key));
if ($val[1] + $lifetime < time()) {
$this->ref->del($key);
}
}
return TRUE;
case 'memcache':
foreach (memcache_get_extended_stats($this->ref, 'slabs') as $slabs) {
foreach (array_filter(array_keys($slabs), 'is_numeric') as $id) {
foreach (memcache_get_extended_stats($this->ref, 'cachedump', $id) as $data) {
if (is_array($data)) {
foreach ($data as $key => $val) {
if (preg_match($regex, $key) && $val[1] + $lifetime < time()) {
memcache_delete($this->ref, $key);
}
}
}
}
}
}
return TRUE;
case 'wincache':
$info = wincache_ucache_info();
foreach ($info['ucache_entries'] as $item) {
if (preg_match($regex, $item['key_name']) && $item['use_time'] + $lifetime < time()) {
wincache_ucache_delete($item['key_name']);
}
}
return TRUE;
case 'xcache':
return TRUE;
/* Not supported */
/* Not supported */
case 'folder':
if ($glob = @glob($parts[1] . '*')) {
foreach ($glob as $file) {
if (preg_match($regex, basename($file)) && filemtime($file) + $lifetime < time()) {
@unlink($file);
}
}
}
return TRUE;
}
return FALSE;
}
/**
* Remove a value in the remote cache store
*
* @access public
* @param string Cache unique key
* @return boolean Cache removal successful
*/
public function removeFromCache($key)
{
return memcache_delete($this->link, md5($this->identifier . $key));
}
public static function remove(string $key)
{
return memcache_delete($key);
}
/**
* @inheritDoc
*
* @param String $key
*/
public function delete($key)
{
$this->connect();
if ($this->mc) {
$this->mc->delete($key, 0);
} else {
memcache_delete($this->connection, $key, 0);
}
$this->client->getLogger()->debug('Memcache cache delete', array('key' => $key));
}
public function url_stat($path, $flags)
{
$path = trim(substr($path, 8));
$path = rtrim($path, '/');
if (!$this->is_file_info_exists($path)) {
return false;
} else {
if ($stat = memcache_get($this->mc(), $path . '.meta')) {
$this->stat = unserialize($stat);
if (is_array($this->stat)) {
if ($this->stat['mode'] == $this->dir_mode || ($c = memcache_get($this->mc(), $path))) {
return $this->stat;
} else {
memcache_delete($this->mc(), $path . '.meta');
}
}
}
return false;
}
}
/**
Delete variable from framework cache
@return bool
@param $name string
@param $quiet bool
@public
**/
static function clear($name, $quiet = FALSE)
{
if (!self::$vars['CACHE']) {
return TRUE;
}
if (is_null(self::$backend)) {
// Auto-detect back-end
self::detect();
if (!self::prep()) {
return FALSE;
}
}
$key = $_SERVER['SERVER_NAME'] . '.' . $name;
// Instruct back-end to clear data
switch (self::$backend['type']) {
case 'apc':
$ok = !apc_exists($key) || apc_delete($key);
break;
case 'memcache':
$ok = memcache_delete(self::$backend['id'], $key);
break;
case 'xcache':
$ok = !xcache_isset($key) || xcache_unset($key);
break;
case 'folder':
$ok = !is_file(self::$backend['id'] . $key) || @unlink(self::$backend['id'] . $key);
break;
}
if (is_bool($ok) && !$ok) {
if (!$quiet) {
trigger_error(sprintf(self::TEXT_Clear, $name));
}
return FALSE;
}
// Check level-1 cache first
if (isset(self::$buffer) && isset(self::$buffer[$name])) {
unset(self::$buffer[$name]);
}
return TRUE;
}
public function del($name)
{
return memcache_delete($this->mmc, $name);
}
/**
* @param string|array $key
* @return bool
*/
static function del($key)
{
if (is_array($key)) {
foreach ($key as $k) {
self::del($k);
}
return;
}
if (self::$localCache && isset(self::$_data[$key])) {
unset(self::$_data[$key]);
}
$memcache_obj = self::_connect(self::getServer($key));
return memcache_delete($memcache_obj, $key, 0);
}
/**
* @inheritDoc
* @param String $key
*/
public function delete($key)
{
$this->connect();
if ($this->mc) {
$this->mc->delete($key, 0);
} else {
memcache_delete($this->connection, $key, 0);
}
}
function __pagination_concurrent_create_warm_page($mc_handler, $locking_key, $page_key, $query)
{
$lock = memcache_add($mc_handler, $locking_key, microtime(true));
if ($lock) {
$item = db_get_row($query);
memcache_delete($mc_handler, $locking_key);
return $item;
}
//someone else is updating same page
$value_changes = 0;
$known_value = false;
while (true) {
$lock = memcache_get($mc_handler, $locking_key);
if ($lock) {
if ($known_value != $lock) {
$value_changes++;
if ($value_changes > 2) {
return memcache_get($mc_handler, $page_key);
}
$known_value = $lock;
}
} else {
$lock = memcache_add($mc_handler, $locking_key, microtime(true));
if ($lock) {
$item = db_get_row($query);
memcache_delete($mc_handler, $locking_key);
return $item;
} else {
$value_changes++;
}
}
}
}
public function testDeleteNotThere()
{
$memcache = new Memcache();
$request = new MemcacheDeleteRequest();
$item = $request->addItem();
$item->setKey("delete_key");
$response = new MemcacheDeleteResponse();
$response->addDeleteStatus(DeleteStatusCode::NOT_FOUND);
$this->apiProxyMock->expectCall('memcache', 'Delete', $request, $response);
$this->assertFalse(memcache_delete($memcache, "delete_key"));
$this->apiProxyMock->verify();
}
/**
* @inheritDoc
* @param String $key
*/
public function delete($key)
{
$this->connect();
if ($this->mc) {
$this->mc->delete($key, 0);
} else {
memcache_delete($this->connection, $key, 0);
}
$this->log('debug', 'Memcache cache delete', array('key' => $key));
}
