pdo 常用函数
pdo常用函数 无 //print_r(pdo_drivers());header('Content-Type:text/html; charset=utf-8'); error_reporting(E_ALL^E_NOTICE);try{$pdo_conn=new PDO('mysql:host=localhost;dbname=study_test','root','');}catch(PDOException $e){echo 'conn error'.$e-
pdo 常用函数
//print_r(pdo_drivers()); header('Content-Type:text/html; charset=utf-8'); error_reporting(E_ALL^E_NOTICE); try{ $pdo_conn=new PDO('mysql:host=localhost;dbname=study_test','root',''); }catch(PDOException $e){ echo 'conn error'.$e->getMessage(); } $pdo_conn->exec('set names utf8;'); // $query='insert into pdo_test(name,phone)values("小明","123456789")'; // $pdo_conn->exec($query); $query_s='select * from pdo_test'; $result=$pdo_conn->query($query_s); echo '返回结果集中的总列数--'.$result->columnCount().'<br>'; while($row=$result->fetch(PDO::FETCH_ASSOC)) { echo "姓名:{$row[name]},电话:{$row[phone]} <br>"; } echo "-------------<br>"; $rows=$result->fetchAll(); foreach($rows as $val) { echo "姓名:{$val[name]}, 电话:{$val[phone]}"; } echo $pdo_conn->errorCode(); // pdo 事务 /** 1.开始事务 PDO::beginTransaction() 禁用自动提交模式,也就是说执行commit()方法前 任何数据库修改都不会生效 2.提交事务 PDO::commit() 提交事务 3.回滚事务 PDO::rollback()取消自执行beginTransaction()以来所做的所有数据库修改 */

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