How to connect to SQL Server using PHP and perform CRUD operations?

1 year ago
Emily Johnson
2 minutes

To connect to SQL Server and perform CRUD operations, you can utilize PHP’s PDO (PHP Data Objects) along with the SQL Server driver. Here is a simple example:

  1. Connect to SQL Server database:
$dsn = 'sqlsrv:Server=服务器地址;Database=数据库名';
$username = '用户名';
$password = '密码';

try {
    $conn = new PDO($dsn, $username, $password);
    $conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
} catch (PDOException $e) {
    echo '连接失败: ' . $e->getMessage();
}
  1. Insert data.
try {
    $sql = "INSERT INTO 表名 (列1, 列2, 列3) VALUES (:value1, :value2, :value3)";
    $stmt = $conn->prepare($sql);
    
    $stmt->bindParam(':value1', $value1);
    $stmt->bindParam(':value2', $value2);
    $stmt->bindParam(':value3', $value3);
    
    $value1 = '值1';
    $value2 = '值2';
    $value3 = '值3';
    
    $stmt->execute();
    
    echo '插入成功';
} catch (PDOException $e) {
    echo '插入失败: ' . $e->getMessage();
}
  1. Search data:
try {
    $sql = "SELECT * FROM 表名";
    $stmt = $conn->prepare($sql);
    $stmt->execute();
    
    $result = $stmt->fetchAll(PDO::FETCH_ASSOC);
    
    foreach ($result as $row) {
        echo $row['列1'] . ' ' . $row['列2'] . ' ' . $row['列3'] . '<br>';
    }
} catch (PDOException $e) {
    echo '查询失败: ' . $e->getMessage();
}
  1. Update data:
try {
    $sql = "UPDATE 表名 SET 列1 = :value1 WHERE 列2 = :value2";
    $stmt = $conn->prepare($sql);

    $stmt->bindParam(':value1', $value1);
    $stmt->bindParam(':value2', $value2);
    
    $value1 = '新值';
    $value2 = '匹配条件';
    
    $stmt->execute();
    
    echo '更新成功';
} catch (PDOException $e) {
    echo '更新失败: ' . $e->getMessage();
}
  1. Delete data:
try {
    $sql = "DELETE FROM 表名 WHERE 列 = :value";
    $stmt = $conn->prepare($sql);
    
    $value = '匹配条件';
    
    $stmt->bindParam(':value', $value);
    $stmt->execute();
    
    echo '删除成功';
} catch (PDOException $e) {
    echo '删除失败: ' . $e->getMessage();
}

Please make sure to replace the placeholders in the above code, such as “server address”, “database name”, “username”, “password”, “table name”, and “column”, with the actual values.

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