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mysql教學(xué)腳本

MySQL是一種廣泛使用的關(guān)系型數(shù)據(jù)庫管理系統(tǒng),很多人都想掌握這個(gè)技能。下面是一份MySQL教學(xué)腳本,將幫助你入門。

// 連接數(shù)據(jù)庫
$servername = "localhost";
$username = "username";
$password = "password";
// 創(chuàng)建連接
$conn = new mysqli($servername, $username, $password);
// 檢查連接是否成功
if ($conn->connect_error) {
die("連接失敗: " . $conn->connect_error);
}
echo "連接成功";
// 創(chuàng)建數(shù)據(jù)庫
$sql = "CREATE DATABASE myDB";
if ($conn->query($sql) === TRUE) {
echo "數(shù)據(jù)庫創(chuàng)建成功";
} else {
echo "Error creating database: " . $conn->error;
}
// 創(chuàng)建表
$sql = "CREATE TABLE MyGuests (
id INT(6) UNSIGNED AUTO_INCREMENT PRIMARY KEY, 
firstname VARCHAR(30) NOT NULL,
lastname VARCHAR(30) NOT NULL,
email VARCHAR(50),
reg_date TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
)";
if ($conn->query($sql) === TRUE) {
echo "Table MyGuests created successfully";
} else {
echo "Error creating table: " . $conn->error;
}
// 添加數(shù)據(jù)
$sql = "INSERT INTO MyGuests (firstname, lastname, email)
VALUES ('John', 'Doe', 'john@example.com')";
if ($conn->query($sql) === TRUE) {
$last_id = $conn->insert_id;
echo "新記錄插入成功,ID為: " . $last_id;
} else {
echo "Error: " . $sql . "
" . $conn->error; } // 查詢數(shù)據(jù) $sql = "SELECT id, firstname, lastname FROM MyGuests"; $result = $conn->query($sql); if ($result->num_rows >0) { // 輸出數(shù)據(jù) while($row = $result->fetch_assoc()) { echo "id: " . $row["id"]. " - Name: " . $row["firstname"]. " " . $row["lastname"]. "
"; } } else { echo "0 結(jié)果"; } // 關(guān)閉連接 $conn->close();

通過學(xué)習(xí)以上腳本,你將學(xué)到如何創(chuàng)建數(shù)據(jù)庫、創(chuàng)建表、添加數(shù)據(jù)和查詢數(shù)據(jù)等基本操作。希望這份MySQL教學(xué)腳本能夠幫助到你入門學(xué)習(xí)。