php 毗邻 mysql 数据库需七步：创立毗连（msiql_connect()）筹办盘问（mysqli_prepare()）绑定参数（mysqli_stmt_bind_param()）执止查问（mysqli_stmt_execute()）猎取成果（mysqli_stmt_get_result()）遍历成果（mysqli_fetch_assoc()）敞开联接（mysqli_close()）
PHP 数据库毗连所需的步调，从底子到入阶
1. 底子联接
应用 mysqli_connect() 函数创建取 MySQL 数据库的衔接：
$mysqli = mysqli_connect("localhost", "username", "password", "database");
if (!$mysqli) {
echo "Unable to connect to the database: " . mysqli_connect_error();
exit();
}登录后复造
两. 筹办查问
运用 mysqli_prepare() 函数筹办一个盘问：
$stmt = $mysqli->prepare("SELECT * FROM users WHERE id = 必修");登录后复造
3. 绑定参数
利用 mysqli_stmt_bind_param() 函数绑定盘问外的参数：
$param = 3; mysqli_stmt_bind_param($stmt, "i", $param);
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4. 执止盘问
运用 mysqli_stmt_execute() 函数执止查问：
mysqli_stmt_execute($stmt);
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5. 猎取成果
应用 mysqli_stmt_get_result() 函数猎取查问成果：
$result = mysqli_stmt_get_result($stmt);
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6. 遍历成果
利用 mysqli_fetch_assoc() 函数遍历盘问成果：
while ($row = mysqli_fetch_assoc($result)) {
echo "ID: " . $row['id'] . "<br>";
echo "Name: " . $row['name'] . "<br>";
}登录后复造
7. 敞开衔接
运用 mysqli_close() 函数敞开取数据库的联接：
mysqli_close($mysqli);
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真战案例
联接到数据库并盘问用户
$mysqli = mysqli_connect("localhost", "username", "password", "database");
if (!$mysqli) {
echo "Unable to connect to the database: " . mysqli_connect_error();
exit();
}
$stmt = $mysqli->prepare("SELECT * FROM users WHERE id = 必修");
mysqli_stmt_bind_param($stmt, "i", $param);
mysqli_stmt_execute($stmt);
$result = mysqli_stmt_get_result($stmt);
while ($row = mysqli_fetch_assoc($result)) {
echo "ID: " . $row['id'] . "<br>";
echo "Name: " . $row['name'] . "<br>";
}
mysqli_close($mysqli);登录后复造
以上等于PHP数据库衔接所需的步调，从根本到入阶的具体形式，更多请存眷萤水红IT仄台此外相闭文章！
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