Could you tell me how to insert a variable! Solution

Could you tell me how to insert a variable! & Lt ;? Phpinclude (& quot; conn. php & quot;); $ name =$ _ POST [& quot; username & quot;]; $ psw =$ _ POST [& quot; userpsw & quot;]; $ email = $ _ POST [& ask Daxia for instructions on how to insert variables!
$ Name = $ _ POST ["username"];
$ Psw = $ _ POST ["userpsw"];
$ Email = $ _ POST ["email"];
$ Qq =$ _ POST ["qq"];
Echo $ name;
Echo $ psw;
Echo $ email;
Echo $ qq;
$ Insert = mysql_query ("insert into user (name, psw, email, qq) values ($ name, $ psw, $ email, $ qq )");
If (! $ Insert ){
Echo "insertion failed! ";
}
?>
The preceding code inserts a form submission information.
Echo $ name;
Echo $ psw;
Echo $ email;
Echo $ qq;
This section can be output. that is to say, there is no problem with form submission? However, the insert operation has always failed and no data is inserted in the database. what is the problem? (I am a beginner. thank you for your understanding ~~ There are not many points, online reply ing !)

------ Solution --------------------
SQL adds all your variables to ''. if the data table is of the int value or other types, you do not need to add any other types''

$ Insert = mysql_query ("insert into user (name, psw, email, qq) values ('$ name',' $ psw', '$ email', '$ QQ ') ");
------ Solution --------------------
Discussion

The database connection is normal, because I have been using this. conn to connect to the database, saving all the time to write. The query can be implemented.

------ Solution --------------------
Send your table structure. I will see what encoding is. set the encoding to be consistent.

------ Solution --------------------
Discussion

How to send a picture ...... It seems that there are no widgets installed.