【发布时间】：2016-04-13 00:33:42
【问题描述】：
我有一个试图运行的 PDO 事务，第一个查询创建一个开关，第二个查询将有关它的信息添加到另一个表。我的问题是，由于某种原因，第一个查询没有正确执行，但事务已提交。 （我使用以下 PDO 类 http://culttt.com/2012/10/01/roll-your-own-pdo-php-class/）
try{
//Insert into required tables
$db->beginTransaction();
$db->Query("INSERT INTO firewall (Name)VALUES(:Name)");
$db->bind(':Name',$Name);
$db->execute();
$db->Query("INSERT INTO firewall_switch (Switch_ID, firewall_id,customer_ID)VALUES(:Switch,LAST_INSERT_ID(),:Customer)");
$db->bind(':Switch',$switch);
$db->bind(':Customer',$customer);
$db->execute();
$db->endTransaction();
}catch(PDOException $e){
$db->cancelTransaction();
}
以下是从日志中在 SQL 中运行的内容：
6 Query START TRANSACTION
6 Prepare [6] INSERT INTO firewall (Name)VALUES(?)
6 Prepare [7] INSERT INTO firewall_switch (Switch_ID, firewall_id,customer_ID)VALUES(?,LAST_INSERT_ID(),?)
6 Execute [7] INSERT INTO firewall_switch (Switch_ID, firewall_id,customer_ID)VALUES('2',LAST_INSERT_ID(),'164')
6 Query COMMIT
如您所见，第一个查询永远不会执行，但第二个会执行。此特定事务应该已回滚，因为存在不允许的重复 ID。
如果没有重复，则事务似乎按预期完成，但我不确定为什么回滚不起作用...
编辑：
数据库类： 类 Db{
private static $Connection = array();
public $connection;
private $dbh;
private $error;
private $stmt;
public static function GetConnection($connection)
{
if(!array_key_exists($connection,self::$Connection))
{
$className = __CLASS__;
self::$Connection[$connection] = new $className($connection);
}
return self::$Connection[$connection];
}
public function __construct($connection){
global $config;
//Load Settings
$this->id = uniqid();
$this->connection = $connection;
if(array_key_exists($connection,$config['connections']['database'])){
$dbConfig = $config['connections']['database'][$connection];
// Set DSN
$dsn = 'mysql:host=' . $dbConfig['host'] . ';port='.$dbConfig['port'].';dbname=' . $dbConfig['database'];
}
// Set options
$options = array(
PDO::ATTR_PERSISTENT => true,
PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION
);
// Create a new PDO instantiate
try{
$this->dbh = new PDO($dsn, $dbConfig['user'], $dbConfig['password'], $options);
}
// Catch any errors
catch(PDOException $e){
$this->error = $e->getMessage();
error_log($e->getMessage());
}
}
//Create the SQL Query
public function query($query){
$this->stmt = $this->dbh->prepare($query);
}
//Bind SQL Params
public function bind($param, $value, $type = null){
if (is_null($type)) {
switch (true) {
case is_int($value):
$type = PDO::PARAM_INT;
break;
case is_bool($value):
$type = PDO::PARAM_BOOL;
break;
case is_null($value):
$type = PDO::PARAM_NULL;
break;
default:
$type = PDO::PARAM_STR;
}
}
$this->stmt->bindValue($param, $value, $type);
}
//Execute the SQL
public function execute($array = NULL){
if($array == NULL){
return $this->stmt->execute();
}else{
return $this->stmt->execute($array);
}
}
public function resultset(){
$this->execute();
return $this->stmt->fetchAll(PDO::FETCH_ASSOC);
}
//Return Single Record
public function single(){
$this->execute();
return $this->stmt->fetch(PDO::FETCH_ASSOC);
}
//Count rows in table
public function rowCount(){
return $this->stmt->rowCount();
}
//Show last ID Inserted into table
public function lastInsertId(){
return $this->dbh->lastInsertId();
}
//Transactions allows the tracking of multiple record inserts, should one fail all will rollback
public function beginTransaction(){
return $this->dbh->beginTransaction();
}
public function endTransaction(){
return $this->dbh->commit();
}
public function cancelTransaction(){
return $this->dbh->rollBack();
}
//Debug dumps the info that was contained in a perpared statement
public function debugDumpParams(){
return $this->stmt->debugDumpParams();
}
}
?>
数据库结构：
CREATE TABLE `firewall` (
`id` int(10) unsigned NOT NULL auto_increment,
`Name` varchar(255) NOT NULL,
PRIMARY KEY (`id`),
UNIQUE KEY `Name_UNIQUE` (`Name`),
UNIQUE KEY `id_UNIQUE` (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=40 DEFAULT CHARSET=latin1
CREATE TABLE `firewall_switch` (
`id` int(11) NOT NULL auto_increment,
`Switch_ID` int(10) unsigned NOT NULL,
`firewall_id` int(10) unsigned NOT NULL,
`Customer_ID` int(11) NOT NULL,
PRIMARY KEY (`id`),
UNIQUE KEY `id_UNIQUE` (`id`),
KEY `fk_firewall_switch_Switch1_idx` (`Switch_ID`),
KEY `fk_firewall_switch_firewall1_idx` (`firewall_id`),
) ENGINE=InnoDB AUTO_INCREMENT=59 DEFAULT CHARSET=latin1
【问题讨论】：
-
您能否发布您的
$db课程代码以及构建它的位置.. 该链接仅显示如何编写一个，它没有提供完整的课程，.重复检查的性质是什么？您能否在所引用的两个表中分别显示 SHOW CREATE TABLE 的结果。 -
你有设置 PDO 抛出异常吗？默认情况下，它使用静默错误模式，要求您在每次操作后明确检查错误。请参阅Errors and error handling 了解更多信息。
-
@Arth 附加了我的数据库类以及数据库结构
-
@eggyal 我在我的 DB 类中有这个
标签： php mysql pdo transactions