PDO を使用したデータベース操作の一般的な方法

<code><span><span><?php</span><span>$dbh</span> = <span>new</span> PDO(<span>'mysql:host=localhost;port=3306;dbname=test'</span>, <span>$user</span>, <span>$pass</span>,<span>array</span> (PDO::MYSQL_ATTR_INIT_COMMAND => <span>'SET NAMES \'UTF8\''</span>,PDO::ATTR_ERRMODE => PDO::ERRMODE_<strong>Exception</strong>));
<span>?></span></span></span></code>

<code><span>try</span>{
    <span>$params</span> = <span>array</span> (
                PDO::MYSQL_ATTR_INIT_COMMAND => <span>'SET NAMES \'UTF8\''</span> ,
                PDO::ATTR_ERRMODE => PDO::ERRMODE_<strong>Exception</strong>,
        );

    <span>$dbh</span> = <span>new</span> PDO(<span>'mysql:host='</span>.<span>$mysql_server_name</span>.<span>';dbname='</span>.<span>$mysql_database</span>, <span>$mysql_username</span>, <span>$mysql_password</span>,<span>$params</span>);
    <span>echo</span><span>"DB Connect OK!!!"</span>.<span>'<br />'</span>;
}<span>catch</span>(PDO<strong>Exception</strong> <span>$e</span>){
    <span>echo</span><span>"DB Connect Error!!!"</span>.<span>$e</span>->getMessage();
    <span>exit</span>;
}</code>

<code><span>$sql</span>=<span>'select pid,pname from project_list'</span>;

<span>foreach</span>(<span>$dbh</span>->query(<span>$sql</span>) <span>as</span><span>$row</span>){        <span>// 输出结果集中的数据</span><span>echo</span><span>$row</span>[<span>'pid'</span>].<span>'<br />'</span>;
    <span>echo</span><span>$row</span>[<span>'pname'</span>].<span>'<br />'</span>;
}</code>

<code><span>$sql</span> = <span>'insert into project_list(pname)values(\'</span>tianxin\<span>')'</span>;
<span>$rows</span> = <span>$dbh</span>-><span>exec</span>(<span>$sql</span>);
<span>echo</span><span>'更新了'</span>.<span>$rows</span>.<span>'行<br />'</span>;


<span>echo</span><span>"最终自动编号是:"</span>.<span>$dbh</span>->lastInsertId().<span>"<br/>"</span>;</code>