php使用mysqli连接数据库

<code><span>$conn</span> = mysqli_connect(<span>'localhost'</span>, <span>'root'</span>, <span>''</span>, <span>'addressBook'</span>) or die(<span>'Connect error!'</span>);

        <span>$sql</span> = <span>"insert into "</span>.<span>$this</span>->tb_group.<span>" value('', '<span>$name</span>', '<span>$pwd</span>', '<span>$numIdList</span>')"</span>;

        <span>$result</span> = <span>$conn</span>->query(<span>$sql</span>);        //添加成功result的值为boolean值<span>true</span>
        //<span>$result</span> = mysqli_query(<span>$conn</span>, <span>$sql</span>);

        <span>if</span> (<span>$result</span>) {
            <span>$lastid</span> = mysqli_insert_id(<span>$conn</span>);    //刚刚插入数据库的记录id
            <span>echo</span><span>"<br>新建通讯录成功！"</span>;
        }<span>else</span>{
            <span>echo</span><span>"<br>新建通讯录失败！"</span>;
        }</code>