how to rectify this “SQL syntax” in php&mysql

Question

i'm trying to create a tagging sys demo here. And i'm stumped why i get this error

You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near '#ok )' at line 1

here is my code:

$insert=mysqli_query($conn, 'insert into `hashtag` (posts) values ('.$data1.')') or die(mysqli_error($conn));                        

any help would be appreciated.

Answer 1

In mysqli query you don't have to put $conn . Just remove it and in query put like this '".$data1."' And check.