duplicate rows will be insert into table when i use 0 for primary key
<p>When i use this SQL command, duplicate rows will insert.</p>

<p>SQL command is:</p>

<pre><code>$dbh = mysql_connect(db_host, db_user, db_pass);
mysql_select_db(db_name, $dbh);

mysql_query("INSERT INTO test VALUES(0, '1')");
</code></pre>

<p>this happened just when i use 0 for first field that is primary and <strong>auto_increment</strong></p>
