PHP Database::beginTransaction方法代码示例

 public function update()
 {
     $inTransaction = Database::inTransaction();
     if (!$inTransaction) {
         Database::beginTransaction();
     }
     $statement = Database::prepare("UPDATE user_power SET `uid`=:uid WHERE id=:id");
     $statement->bindValue(':uid', $this->uid, \PDO::PARAM_INT);
     $statement->bindValue(':id', $this->id, \PDO::PARAM_INT);
     $statement->execute();
     $this->uid = Database::lastInsertId();
     $statement->execute();
     if (!$inTransaction) {
         Database::commit();
     }
 }

 function execute()
 {
     if (!Database::beginTransaction()) {
         trigger_error('Cannot initiate transaction.', E_USER_WARNING);
         return false;
         // Must halt explicitly because of data integrity.
     }
     $hasFailure = false;
     $failHandler = function () use(&$hasFailure) {
         $hasFailure = true;
     };
     foreach ($this->callbacks as $callback) {
         $callback()->fail($failHandler);
         if ($hasFailure) {
             break;
         }
     }
     if ($hasFailure) {
         Database::rollback();
     } else {
         Database::commit();
     }
     return !$hasFailure;
 }

 /**
  * update User info
  *
  */
 public function updateUser()
 {
     $inTransaction = Database::inTransaction();
     if (!$inTransaction) {
         Database::beginTransaction();
     }
     $statement = Database::prepare("UPDATE member SET email=:email, `password`=:pwd, sspwd=:sspwd, `port`=:port, nickname=:nickname,\n            `flow_up`=:flow_up, `flow_down`=:flow_down, transfer=:transfer, plan=:plan, `enable`=:enable, invite=:invite, regDateLine=:regDateLine WHERE uid=:userId");
     $statement->bindValue(':email', $this->email, \PDO::PARAM_STR);
     $statement->bindValue(':pwd', $this->password, \PDO::PARAM_STR);
     $statement->bindValue(':sspwd', $this->sspwd, \PDO::PARAM_STR);
     $statement->bindValue(':port', $this->port, \PDO::PARAM_INT);
     $statement->bindValue(':nickname', $this->nickname, \PDO::PARAM_STR);
     $statement->bindValue(':flow_up', $this->flow_up, \PDO::PARAM_INT);
     $statement->bindValue(':flow_down', $this->flow_down, \PDO::PARAM_INT);
     $statement->bindValue(':transfer', $this->transfer, \PDO::PARAM_INT);
     $statement->bindValue(':plan', $this->plan, \PDO::PARAM_STR);
     $statement->bindValue(':enable', $this->enable, \PDO::PARAM_INT);
     $statement->bindValue(':invite', $this->invite, \PDO::PARAM_INT);
     $statement->bindValue(':regDateLine', $this->regDateLine, \PDO::PARAM_INT);
     $statement->bindValue(':userId', $this->uid, \PDO::PARAM_INT);
     $statement->execute();
     if (!$inTransaction) {
         Database::commit();
     }
 }

 public function updateInvite()
 {
     $inTransaction = Database::inTransaction();
     if (!$inTransaction) {
         Database::beginTransaction();
     }
     $statement = Database::prepare("UPDATE invite SET expiration=:expiration,\n\t\t\t`reguid`=:reguid, `regDateLine`=:regDateLine, `status`=:status, `inviteIp`=:inviteIp WHERE invite=:invite");
     $statement->bindValue(':expiration', $this->expiration, \PDO::PARAM_INT);
     $statement->bindValue(':reguid', $this->reguid, \PDO::PARAM_INT);
     $statement->bindValue(':regDateLine', $this->regDateLine, \PDO::PARAM_INT);
     $statement->bindValue(':status', $this->status, \PDO::PARAM_INT);
     $statement->bindValue(':inviteIp', $this->inviteIp, \PDO::PARAM_STR);
     $statement->bindValue(':invite', $this->invite, \PDO::PARAM_STR);
     $statement->execute();
     if (!$inTransaction) {
         Database::commit();
     }
 }

 /**
  * Save new password
  * @param string $password New password
  */
 public function savePassword($password)
 {
     $salt = substr(md5($this->id . $this->email . ENCRYPT_KEY), 8, 16);
     $this->password = substr(md5(md5($password) . $salt), 0, 30) . 'T' . self::ENCRYPT_TYPE_ENHANCE;
     $inTransaction = Database::inTransaction();
     if (!$inTransaction) {
         Database::beginTransaction();
     }
     $statement = Database::prepare("UPDATE member SET `password`=:pwd WHERE id=:userId");
     $statement->bindValue(':pwd', $this->password, \PDO::PARAM_STR);
     $statement->bindValue(':userId', $this->id, \PDO::PARAM_INT);
     $statement->execute();
     if (!$inTransaction) {
         Database::commit();
     }
 }

// child:  $forked == true
$forked = $pid == 0;
// unset($pid);
// parent will die here
if (!$forked) {
    exit(1);
}
// Avoid forking connection crash, renew the connection.
Database::disconnect();
// Get maximum allowed connections before table lock.
$capLimit = (int) @conf::get('system::crontab.process_limit');
if (!$capLimit) {
    $capLimit = Process::MAXIMUM_CAPACITY;
}
// Start transaction before lock tables.
Database::beginTransaction();
// Pick next awaiting process
Database::locKTables([FRAMEWORK_COLLECTION_PROCESS . ' READ']);
$res = (int) Database::fetchField('SELECT IFNULL(SUM(`capacity`), 0) as occupation
    FROM `' . FRAMEWORK_COLLECTION_PROCESS . '`
    WHERE `pid` IS NOT NULL AND `pid` > 0');
Database::unlockTables(true);
if ($res >= $capLimit) {
    Log::debug('Active processes has occupied maximum server capacity, daemon exits.');
    Database::rollback();
    die;
}
unset($res, $capLimit);
Database::lockTables(array(FRAMEWORK_COLLECTION_PROCESS . ' LOW_PRIORITY WRITE', FRAMEWORK_COLLECTION_PROCESS . ' as `active` LOW_PRIORITY WRITE', FRAMEWORK_COLLECTION_PROCESS . ' as `inactive` LOW_PRIORITY WRITE'));
$process = Database::fetchRow('SELECT `inactive`.* FROM `' . FRAMEWORK_COLLECTION_PROCESS . '` as `inactive`
    LEFT JOIN ( SELECT `type`, SUM(`capacity`) as `occupation` FROM `' . FRAMEWORK_COLLECTION_PROCESS . '`

 /**
  * 删除 node
  * @param $nodeId  Int
  */
 public static function deleteNode($nodeId)
 {
     $inTransaction = Database::inTransaction();
     if (!$inTransaction) {
         Database::beginTransaction();
     }
     $statement = Database::prepare("DELETE * FROM node WHERE id=:id");
     $statement->bindValue(':id', $nodeId, \PDO::PARAM_INT);
     $statement->execute();
     if (!$inTransaction) {
         Database::commit();
     }
 }

 /**
  * Update message
  */
 public function update()
 {
     $inTransaction = Database::inTransaction();
     if (!$inTransaction) {
         Database::beginTransaction();
     }
     $statement = Database::prepare("UPDATE message SET `content`=:content, `pushTime`=:pushTime,\n\t\t\t`addTime`=:addTime, `pushUsers`=:pushUsers, `type`=:type, `pushEndTime`:=pushEndTime,\n\t\t\t `order`=:order WHERE id=:id");
     $statement->bindValue(':content', $this->name, \PDO::PARAM_STR);
     $statement->bindValue(':pushTime', $this->type, \PDO::PARAM_INT);
     $statement->bindValue(':addTime', $this->server, \PDO::PARAM_INT);
     $statement->bindValue(':pushUsers', $this->method, \PDO::PARAM_STR);
     $statement->bindValue(':type', $this->info, \PDO::PARAM_INT);
     $statement->bindValue(':pushEndTime', $this->status, \PDO::PARAM_INT);
     $statement->bindValue(':order', $this->order, \PDO::PARAM_INT);
     $statement->bindValue(':id', $this->order, \PDO::PARAM_INT);
     $statement->execute();
     if (!$inTransaction) {
         Database::commit();
     }
 }