mysql从数据库导出表格

mysqldump -u username -p database_name table_name > table_name.sql

SELECT * INTO OUTFILE '/path/to/file.csv'
FIELDS TERMINATED BY ',' OPTIONALLY ENCLOSED BY '"'
LINES TERMINATED BY '\n'
FROM table_name;

<?php
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "database_name";

// 创建连接
$conn = new mysqli($servername, $username, $password, $dbname);

// 检测连接
if ($conn->connect_error) {
    die("连接失败: " . $conn->connect_error);
}

$result = $conn->query("SELECT * FROM table_name");

if ($result->num_rows > 0) {
    $file = fopen('php://output', 'w');
    $header = array();
    while ($field_info = $result->fetch_field()) {
        $header[] = $field_info->name;
    }
    fputcsv($file, $header);

    while ($row = $result->fetch_assoc()) {
        fputcsv($file, $row);
    }
    fclose($file);
} else {
    echo "0 结果";
}

$conn->close();
?>