DELETE FROM statement not working

问题

I have a table in a database called 'threads' and I want to delete a row where the id is equal to $forumid which is set by the URL. The URL looks something like this: domain.com/viewThread.php?forumid=1 I am getting this using

 $forumid = $_GET['forumid'];

and I am sure that this is working because I use

echo $forumid;

and it works correctly. But when I go to delete a row using

$db->query("DELETE FROM threads WHERE id='$forumid'");

its not working for some reason. Can somebody please help me with this? Is it possible that there is something wrong with my phpMyAdmin or mySQL database?

回答1:

Try the below query

$db->query("DELETE FROM threads WHERE id='.$forumid.'");

回答2:

Check the query

("DELETE FROM threads WHERE id= '.$forumid.'");

回答3:

Try by using any of the below codes.

$db->query("DELETE FROM threads WHERE id='.$forumid.'");

OR

$db->query("DELETE FROM threads WHERE id=$forumid");

来源：https://stackoverflow.com/questions/29361203/delete-from-statement-not-working