How to generate a unique id for different visitors with PHP?

Question

The value will be used as:

from INTEGER UNSIGNED NOT NULL

which defines different visitors that haven't login.

How to properly generate that number with PHP?

EDIT:

If using database as follows:

create table user_visits(
    id INTEGER UNSIGNED NOT NULL AUTO_INCREMENT,
    primary key(id)
);

How to insert a new record into it?

365 questions, only 7 upvotes and 91 selected answers. Lame. — Mike B, Sep 11 '09 at 13:21

score 2 · Answer 1 · answered Sep 11 '09 at 13:12

2

answered Sep 11 '09 at 13:12

Aziz

score 1 · Accepted Answer · answered Sep 11 '09 at 13:11

1

Use the id:

INTEGER UNSIGNED NOT NULL PRIMARY KEY AUTO_INCREMENT

answered Sep 11 '09 at 13:11

soulmerge

That's from database.How to do that from PHP? – omg Sep 11 '09 at 13:12
You posted the database field to insert to, so I thought you want to store them in the database. INSERT and select the inserted id with mysql_insert_id(). – soulmerge Sep 11 '09 at 13:14
OK,I've declined to use database now.But how to insert a new record into it? – omg Sep 11 '09 at 13:19
`INSERT INTO user_visits (id) VALUES (NULL);` – soulmerge Sep 11 '09 at 13:26

score 0 · Answer 3 · answered Sep 11 '09 at 13:12

0

You can insert a value in a database each time with an auto_increment column.

You can also use the php function uniqid().

answered Sep 11 '09 at 13:12

codymanix

3 Answers3