问题描述
在asp.net中,您可以从对数据库的单一调用中检索MULTIPLE数据表。你可以在php中做同样的事情吗?
In asp.net, you can retrieve MULTIPLE datatables from a single call to the database. Can you do the same thing in php?
示例:
$sql ="select * from t1; select * from t2;";
$result = SomeQueryFunc($sql);
print_r($result[0]); // dump results for t1
print_r($result[1]); // dump results for t2
你可以这样做吗?
推荐答案
这被称为多查询。 PHP中的mysql扩展没有任何方法来启用多查询。 mysqli扩展名允许您使用多查询,但只能通过multi_query()方法。请参阅
This is called "multi-query." The mysql extension in PHP does not have any means to enable multi-query. The mysqli extension does allow you to use multi-query, but only through the multi_query() method. See http://php.net/manual/en/mysqli.multi-query.php
不建议使用多查询,因为它可以增加SQL注入攻击造成的潜在损害。如果使用多查询,则应该使用严格的代码检查习惯来避免SQL注入漏洞。
Using multi-query is not recommended, because it can increase the potential damage caused by SQL injection attacks. If you use multi-query, you should use rigorous code inspection habits to avoid SQL injection vulnerability.
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