干嘛我一用自带的PDO就报错啊(已解决,请老板看下是不是源码问题)。。

0

> 已经解决了,我在把GatewayWorker\Lib\DbConnection.php 的$sQuery属性改成 public,然后在我的业务代码执行完single()查询之后,调用一下$db1->sQuery->closeCursor();就可以了,代码如下。。


 $orderCount = $db1->single("select count(*) as count from t2 limit 1;");
$db1->sQuery->closeCursor();
$callCount = $db1->single("select count(*) as count from t1 limit 1;");
$db1->sQuery->closeCursor();

我写了个定时器,就是去查询订单总数,然后推送给指定的客户端。他第一次查询就没问题,第二次查询就会报错,然后是有时候没问题,有时候报错
我试了下在这个function single()函数renturn的前面加了句代码


$this->sQuery->closeCursor();
return $this->sQuery->fetchColumn();

他就不报错,但是返回来的都是flase了。。
看那报错的代码是不是在说还有查询在执行的意思啊。。
这是我的定时器代码


 \Workerman\Lib\Timer::add(10, function() {
$config_name = 'XXXX';
$gate = new \GatewayWorker\Lib\Gateway();
$db = new \GatewayWorker\Lib\Db();

$tempClient = array();
$allSession = $gate->getAllClientSessions();
foreach ($allSession as $key => $value) {
if (isset($value) && $value == $config_name) {
$tempClient[] = $key;
}
}
//如果存在是XXXX的客户端
if (count($tempClient) > 0) {
$config = Config\Db::$$config_name;
$db1 = $db->instance($config_name);
$count = $db1->single("select count(*) as count from {$config}order limit 1;");
foreach ($tempClient as $value) {
$gate->sendToClient($value, json_encode(array( 'order_count' => $count)));
}
}
});

这是报错代码


client:180.136.150.226:60103 gateway:127.0.0.1:7272  client_id:7f0000010b5600000001 session:{"orign":"laikediancan"} onMessage:{"orign":""}
PHP Fatal error: Uncaught exception 'PDOException' with message 'SQLSTATE: General error: 2014 Cannot execute queries while other unbuffered queries are active. Consider using PDOStatement::fetchAll(). Alternatively, if your code is only ever going to run against mysql, you may enable query buffering by setting the PDO::MYSQL_ATTR_USE_BUFFERED_QUERY attribute.' in /home/wwwroot/diancan/public_html/im/GatewayWorker/GatewayWorker/Lib/DbConnection.php:1724
Stack trace:
#0 /home/wwwroot/diancan/public_html/im/GatewayWorker/GatewayWorker/Lib/DbConnection.php(1724): PDO->prepare('select count(*)...')
#1 /home/wwwroot/diancan/public_html/im/GatewayWorker/GatewayWorker/Lib/DbConnection.php(1906): GatewayWorker\Lib\DbConnection->execute('select count(*)...', NULL)
#2 /home/wwwroot/diancan/public_html/im/GatewayWorker/Applications/IM/start_businessworker.php(52): GatewayWorker\Lib\DbConnection->single('select count(*)...')
#3 : {closure}()
#4 /home/wwwroot/diancan/public_html/im/GatewayWorker/Workerman/Event in /home/wwwroot/diancan/public_html/im/GatewayWorker/GatewayWorker/Lib/DbConnection.php on line 1724

Fatal error: Uncaught exception 'PDOException' with message 'SQLSTATE: General error: 2014 Cannot execute queries while other unbuffered queries are active. Consider using PDOStatement::fetchAll(). Alternatively, if your code is only ever going to run against mysql, you may enable query buffering by setting the PDO::MYSQL_ATTR_USE_BUFFERED_QUERY attribute.' in /home/wwwroot/diancan/public_html/im/GatewayWorker/GatewayWorker/Lib/DbConnection.php:1724
Stack trace:
#0 /home/wwwroot/diancan/public_html/im/GatewayWorker/GatewayWorker/Lib/DbConnection.php(1724): PDO->prepare('select count(*)...')
#1 /home/wwwroot/diancan/public_html/im/GatewayWorker/GatewayWorker/Lib/DbConnection.php(1906): GatewayWorker\Lib\DbConnection->execute('select count(*)...', NULL)
#2 /home/wwwroot/diancan/public_html/im/GatewayWorker/Applications/IM/start_businessworker.php(52): GatewayWorker\Lib\DbConnection->single('select count(*)...')
#3 : {closure}()
#4 /home/wwwroot/diancan/public_html/im/GatewayWorker/Workerman/Event in /home/wwwroot/diancan/public_html/im/GatewayWorker/GatewayWorker/Lib/DbConnection.php on line 1724
WORKER EXIT UNEXPECTED E_ERROR Uncaught exception 'PDOException' with message 'SQLSTATE: General error: 2014 Cannot execute queries while other unbuffered queries are active. Consider using PDOStatement::fetchAll(). Alternatively, if your code is only ever going to run against mysql, you may enable query buffering by setting the PDO::MYSQL_ATTR_USE_BUFFERED_QUERY attribute.' in /home/wwwroot/diancan/public_html/im/GatewayWorker/GatewayWorker/Lib/DbConnection.php:1724
Stack trace:
#0 /home/wwwroot/diancan/public_html/im/GatewayWorker/GatewayWorker/Lib/DbConnection.php(1724): PDO->prepare('select count(*)...')
#1 /home/wwwroot/diancan/public_html/im/GatewayWorker/GatewayWorker/Lib/DbConnection.php(1906): GatewayWorker\Lib\DbConnection->execute('select count(*)...', NULL)
#2 /home/wwwroot/diancan/public_html/im/GatewayWorker/Applications/IM/start_businessworker.php(52): GatewayWorker\Lib\DbConnection->single('select count(*)...')
#3 : {closure}()
#4 /home/wwwroot/diancan/public_html/im/GatewayWorker/Workerman/Event in /home/wwwroot/diancan/public_html/im/GatewayWorker/GatewayWorker/Lib/DbConnection.php on line 1724
worker exit with status 65280
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walkor

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报错的意思是返回的结果集是多行,你只取了1行或者说没有取完,然后又执行查询,就会报错。


可能你哪里调用了single 或者row sql没指定limit 1

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