将 CSV 文件上传到 MySql

Question

我正在尝试使用 MySQLi 面向对象创建一个简单的表单来将 CSV 文件上传到 MySql。与数据库的连接工作正常，但由于某种原因，我还没有弄清楚它没有将 CSV 文件中的数据插入数据库。

$servername = "localhost";
$username = "user_name";
$password = "password";
$dbname = "db_name";

// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);

// Check connection
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
}

if(isset($_POST["submit"])) {
    if($_FILES['file']['name']) {
        $filename = explode(".", $_FILES['file']['name']);
        if ($filename[1] == 'csv') {

            $handle = fopen($_FILES['file']['tmp_name'], "r");
            while($data = fgetcsv($handle)) {
                $user_id = mysqli_real_escape_string($conn, $data[1]);
                $name = mysqli_real_escape_string($conn, $data[2]);
                $last_mod = mysqli_real_escape_string($conn, $data[3]);

                $sql="INSERT into user (user_id, name, last_mod) VALUES ('$user_id', '$name', '$last_mod')";
                if (!mysqli_query($con,$sql)) {
                die('Error: ' . mysqli_error($con));
                }
                echo "1 record added";
            }

            $conn->close();
        }
    }

}

<form action="index.php" method="POST" enctype="multipart/form-data" name="beer">
<div class="form-group">
<label for="file">Select your file:</label>
<input name="file" type="file">
</div>
<div class="checkbox">
<label><input type="checkbox">I agree!</label>
</div>
<button type="submit" class="btn btn-default">Upload</button>
</form>

Answer 1

1. 请检查文件类型。必须是 .csv。
2. 请检查您的 csv 文件并删除您写入列名的行。