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pdo 常用函数

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Release: 2016-06-06 19:34:30
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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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