PHP数据库连接所需的步骤，从基础到进阶
php 连接 mysql 数据库需七步：建立连接（msiql_connect()）准备查询（mysqli_prepare()）绑定参数（mysqli_stmt_bind_param()）执行查询（mysqli_stmt_execute()）获取结果（mysqli_stmt_get_result()）遍历结果（mysqli_fetch_assoc()）关闭连接（mysqli_close()）
PHP 数据库连接所需的步骤，从基础到进阶1. 基础连接使用 mysqli_connect() 函数建立与 MySQL 数据库的连接：$mysqli = mysqli_connect("localhost", "username", "password", "database");if (!$mysqli) { echo "Unable to connect to the database: " . mysqli_connect_error(); exit();}2. 准备查询使用 mysqli_prepare() 函数准备一个查询：$stmt = $mysqli->prepare("SELECT * FROM users WHERE id = ?");3. 绑定参数使用 mysqli_stmt_bind_param() 函数绑定查询中的参数：$param = 3;mysqli_stmt_bind_param($stmt, "i", $param);4. 执行查询使用 mysqli_stmt_execute() 函数执行查询：mysqli_stmt_execute($stmt);5. 获取结果使用 mysqli_stmt_get_result() 函数获取查询结果：$result = mysqli_stmt_get_result($stmt);6. 遍历结果使用 mysqli_fetch_assoc() 函数遍历查询结果：while ($row = mysqli_fetch_assoc($result)) { echo "ID: " . $row['id'] . "<br>"; echo "Name: " . $row['name'] . "<br>";}7. 关闭连接使用 mysqli_close() 函数关闭与数据库的连接：mysqli_close($mysqli);实战案例连接到数据库并查询用户$mysqli = mysqli_connect("localhost", "username", "password", "database");if (!$mysqli) { echo "Unable to connect to the database: " . mysqli_connect_error(); exit();}$stmt = $mysqli->prepare("SELECT * FROM users WHERE id = ?");mysqli_stmt_bind_param($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);以上就是PHP数据库连接所需的步骤，从基础到进阶的详细内容，更多请关注php中文网其它相关文章！
PHP 数据库连接所需的步骤，从基础到进阶1. 基础连接使用 mysqli_connect() 函数建立与 MySQL 数据库的连接：$mysqli = mysqli_connect("localhost", "username", "password", "database");if (!$mysqli) { echo "Unable to connect to the database: " . mysqli_connect_error(); exit();}2. 准备查询使用 mysqli_prepare() 函数准备一个查询：$stmt = $mysqli->prepare("SELECT * FROM users WHERE id = ?");3. 绑定参数使用 mysqli_stmt_bind_param() 函数绑定查询中的参数：$param = 3;mysqli_stmt_bind_param($stmt, "i", $param);4. 执行查询使用 mysqli_stmt_execute() 函数执行查询：mysqli_stmt_execute($stmt);5. 获取结果使用 mysqli_stmt_get_result() 函数获取查询结果：$result = mysqli_stmt_get_result($stmt);6. 遍历结果使用 mysqli_fetch_assoc() 函数遍历查询结果：while ($row = mysqli_fetch_assoc($result)) { echo "ID: " . $row['id'] . "<br>"; echo "Name: " . $row['name'] . "<br>";}7. 关闭连接使用 mysqli_close() 函数关闭与数据库的连接：mysqli_close($mysqli);实战案例连接到数据库并查询用户$mysqli = mysqli_connect("localhost", "username", "password", "database");if (!$mysqli) { echo "Unable to connect to the database: " . mysqli_connect_error(); exit();}$stmt = $mysqli->prepare("SELECT * FROM users WHERE id = ?");mysqli_stmt_bind_param($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);以上就是PHP数据库连接所需的步骤，从基础到进阶的详细内容，更多请关注php中文网其它相关文章！ 