娜娜米米下载,www.haosao.info,四年级上册语文课件
一、实例 (mysqli - 面向对象)
<?php
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "mydb";
{
}
二、实例 (mysqli - 面向过程)
<?php
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "mydb";
三、实例 (pdo)
<?php
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "mydbpdo";
try {
//$conn = new pdo("mysql:host=$servername;", $username, $password);
$conn = new pdo("mysql:host=$servername;dbname=$dbname", $username, $password);
echo "连接成功";
// 设置 pdo 错误模式为异常
$conn->setattribute(pdo::attr_errmode, pdo::errmode_exception);
$sql = "create database mydbpdo";
// 使用 exec() ,因为没有结果返回
$conn->exec($sql);
echo "数据库创建成功<br>";
} catch(pdoexception $e) {
echo $sql . "<br>" . $e->getmessage();
}
$conn = null;
?>
四、持久化连接
<?php
$dbh = new pdo('mysql:host=localhost;dbname=test', $user, $pass, array(
pdo::attr_persistent => true
));
?>
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