How can I know the number of affected rows when a mysql-phppdo object performs preprocessing?

Source: Internet
Author: User
In normal mode, $ pdo-& amp; gt; exec ($ SQL); can be used to return the number of affected rows. How can I know the number of affected rows if data is inserted to the pre-processed object? $ Stmt $ pdo-& amp; gt; prepare ($ SQL); $ stmt-& amp; gt; execute (); in normal mode, use $ pdo-> exec ($ SQL); the number of affected rows can be returned;

How can I know the number of affected rows if I insert and delete data in the pre-processing object?
$ Stmt = $ pdo-> prepare ($ SQL );
$ Stmt-> execute ();

Reply content:

In normal mode, $ pdo-> exec ($ SQL); can be used to return the number of affected rows;

How can I know the number of affected rows if I insert and delete data in the pre-processing object?
$ Stmt = $ pdo-> prepare ($ SQL );
$ Stmt-> execute ();

$ Stmt = $ pdo-> prepare ($ SQL); $ stmt-> execute (); $ count = $ stmt-> rowCount (); // Delete the number of rows

PDOStatement: rowCount () returns the number of rows affected by the previous DELETE, INSERT, or UPDATE statement executed by the corresponding PDOStatement object.
If the previous SQL statement executed by the related PDOStatement is a SELECT statement, some data may return the number of rows returned by this statement. However, this method cannot ensure that it is effective for all data and should not be relied on by portable applications.

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.