Question

sorry for my really dumb question.(I’m so new in this!).

I have a query (mysql, the programming language is php):

mysql_query("INSERT INTO user (id, f_name, l_name, email, user_name, password, b_day, gender, country, p_number, address, active)
VALUES ('NULL', '$_POST[fname]', '$_POST[lname]', '$_POST[email]', '$_POST[username]', '$_POST[password]', '$_POST[bday]', '$gender', '$_POST[country]', '$_POST[phone]', 'address', '0')")


or die("The username already exist");

that i need to apply some condition on it , sth like…

if (mysql_query done inserting successfully){
// do 1-
// 2-
// 3-
// 4-
}

else {die("The username already exist");
//and do 
// 1-
// 2-
// 3-
// 4-

}

by the wayI set the username as unique in mysql database so will give an error if someone want to insert sth similar and i catch it as user already exist.

how can i do this?

Answer 1

Use of the mysql_* functions is discouraged. You should learn to use MySqli or PDO. However, I’ll just answer your question.

$qry = mysql_query("...");
if ($qry)
{
    //do 1-2-3-4
}
else
{
    //did not insert
}

And you could do a query checking if the user already exists, before you insert anything.

You should sanitize and clean those $_POSTS.