Question

I have a db table created like this

CREATE TABLE products(id INT,   
                      name varchar(32),   
                      PRIMARY KEY(id,name),   
                      quantity int,   
                      avail varchar(5) );

If I use the following command on the command prompt, the value is inserted properly:

INSERT INTO products(name,quantity,avail) VALUES('stuffed bear doll',100,'OF_ST');

although the id is duplicated

but when I leave it inside the function like this

$query=sprintf("INSERT INTO products(name,quantity,avail) VALUES('%s',%d,'%s');",
                   $name,
                   $quan,
                   $avail);

mysql_query($query);

then there is no insertion done at all.

Answer 1

You needed to set auto_increment on the id field in your create table syntax. You can edit the column to add it.

Also, if $quan is not valid your SQL syntax will give you an error. Put quotes around it: VALUES('%s','%d','%s')