我想使用workerman做與數(shù)據(jù)庫的長連接，所以我設(shè)置了全局變量$DataBaseConn,當(dāng)workerman進(jìn)程啟動時(shí)，連接數(shù)據(jù)庫，$DataBaseConn作為連接標(biāo)識全局使用，如下所示：

$http_worker = new Worker("http://0.0.0.0:80");

$http_worker->count = 1;
$DataBaseConn = null;

$http_worker->onWorkerStart = function($http_worker){
    global $DataBaseConn;
    $database = 'LOTINGO';
    $user = 'db2inst1';
    $password = 'db2inst1';
    $hostname = '192.168.1.129';
    $port = 50000;
    $dsn_db2 = "DATABASE=" . $database . ";HOSTNAME=" . $hostname . ";PORT=" . $port. ";PROTOCOL=TCPIP;UID=" . $user . ";PWD=" . $password . ";";
    $DataBaseConn = db2_connect($dsn_db2, '', '');
};

那么我在onMessage回調(diào)里可以使用該變量查詢數(shù)據(jù)

$http_worker->onMessage = function($connection, $data)
{
    global $DataBaseConn;
    $sql = "select count(*) from table";
    $query = db2_exec($DataBaseConn,$sql);
    while ($res = db2_fetch_array($query)) {
      $result[] = $res;
    }
    $list = var_export($result,true);
    $connection->send($list);
};

那么該全局變量是否在workerman的任何地方使用？

然后我又啟動了webserver

$webserver = new WebServer('http://0.0.0.0:81');
$webserver->addRoot('localhost', __DIR__ . '/web');

我在web目錄下使用該全局變量為何打印為空呢？webserver不是基于workerman的嗎？是不是在web下的php文件無法使用呢？
web/index.php里：

global $DataBaseConn;
var_dump($DataBaseConn);

顯示為空。。。。