PHP 更新查询成功但数据库未更新

Question

I am trying to update a record in my database and SQL query return successful but my database is not changing.

Answer 1

Seems like you're using PDO (hopefully)

When you're using this Data Objects, when a query is executed it will return TRUE, but it doesn't care if it changed something or not, it will return true when there is not a critical MYSQL Error.

What you want to do is to know IF A ROW AS AFFECTED / CHANGED by that query, in that case instead of using;

$PDOObject->query($thequery) == true

you should use:

$result = $PDOObject->query($thequery);

if($result->rowCount() > 0) ...

More info about how to know if a row was affected by a query with PDO

http://php.net/manual/en/pdostatement.rowcount.php

Answer 2

sql query return successful but my database is not changing

Are you sure that there exists at least one record that matches your filter criteria WHERE full_name = '$full_name' AND representative_id = '$login_session' . If no record updating means no any record matching the WHERE condition and so no updates occurring.

Answer 3

representative_id = '$login_session'

Is the representative_id column in your table a VARCHAR , or an INT ? You're passing a string to MySQL, there. If the column in your DB is stored as an INT , try removing the single quotes around $login_session .

When posting questions relating to database queries, it helps to also include your table schema.