一、實體 (MySQLi - 面向物件)
<?php
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "myDB";
// 創建連接
//$conn = new mysqli($servername, $username, $password);
$conn = new mysqli($servername, $username, $password, $dbname );
// 檢測連接
if ($conn->connect_error)
{
die("連接失敗: " . $conn->connect_error);
}
// 創建資料庫
$sql = "CREATE DATABASE myDB";
if ($conn->query($sql) === TRUE)
{
echo "資料庫創建成功";
} else {
echo "Error creating database: " . $conn->error;
}
$conn->close();
echo "連接成功";
?>
二、實體 (MySQLi - 面向程序)
<?php
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "myDB";
// 創建連接
//$conn = mysqli_connect($servername, $username, $password);
$conn = mysqli_connect($servername, $username, $password，$dbname );
// 檢測連接
if (!$conn) {
die("Connection failed: " . mysqli_connect_error());
}
// 創建資料庫
$sql = "CREATE DATABASE myDB";
if (mysqli_query($conn, $sql))
{
echo "資料庫創建成功";
} else {
echo "Error creating database: " . mysqli_error($conn);
}
mysqli_close($conn);
echo "連接成功";
?>
三、實體 (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 "連接成功";
// 設定 PDO 錯誤模式為例外
$conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
$sql = "CREATE DATABASE myDBPDO";
// 使用 exec() ，因為沒有結果回傳
$conn->exec($sql);
echo "資料庫創建成功<br>";} catch(PDOException $e) {
echo $sql . "<br>" . $e->getMessage();
}
$conn = null;
?>
四、持久化連接
<?php
$dbh = new PDO('mysql:host=localhost;dbname=test', $user, $pass, array(
PDO::ATTR_PERSISTENT => true
));
?>
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標籤：PHP