我说的是做这样的事情:
LOCK TABLE页面WRITE;
SELECT * FROM page WHERE col ='value';
INSERT INTO页面(col1,col2)VALUES('val1',val2);
UNLOCK TABLES;
答案 0 :(得分:8)
我没有看到用于锁定表的实际Zend DB方法,但可能只是这样做:
//Lock Table
$sql = "LOCK TABLE page WRITE";
$db->fetchRow($sql);
//Get your data
$sql = "SELECT * FROM page WHERE col='value'";
$result = $db->fetchAll($sql);
//Make the insert
$data = array( 'col1' => 'val1', 'col2' => 'val2' );
$db->insert('page', $data);
//Unlock tables
$sql = "UNLOCK TABLES";
$db->fetchRow($sql);
可能不是最好的解决方案而且未经测试。但它可能适用于你。
更新:我为您找到了更好的解决方案。使用transactions:
// Start a transaction explicitly.
$db->beginTransaction();
try {
//Get your data
$sql = "SELECT * FROM page WHERE col='value'";
$result = $db->fetchAll($sql);
//Make the insert
$data = array( 'col1' => 'val1', 'col2' => 'val2' );
$db->insert('page', $data);
// If all succeed, commit the transaction and all changes
// are committed at once.
$db->commit();
} catch (Exception $e) {
// If any of the queries failed and threw an exception,
// we want to roll back the whole transaction, reversing
// changes made in the transaction, even those that succeeded.
// Thus all changes are committed together, or none are.
$db->rollBack();
echo $e->getMessage();
}
我最近遇到了同样的问题,交易效果很好。绝对是要走的路。
答案 1 :(得分:2)
Zend_Db交易不保证锁定!请参阅此有关如何进行适当的隔离交易的信息。
答案 2 :(得分:1)
$ this-> _db-> getConnection() - > exec('LOCK TABLES page');
答案 3 :(得分:0)
我认为您需要使用适配器,但我不确定锁定是否有效。
$ model-> getAdapter() - > query($ sql,$ bind);