mysql 查找中文

ALTER DATABASE your_database_name CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci;
ALTER TABLE your_table_name CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
ALTER TABLE your_table_name MODIFY your_column_name VARCHAR(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

$mysqli = new mysqli("localhost", "user", "password", "database");
$mysqli->set_charset("utf8mb4");

LOAD DATA INFILE 'your_data_file.txt' INTO TABLE your_table_name CHARACTER SET utf8mb4;

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

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

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

// 设置字符集
$conn->set_charset("utf8mb4");

// 查询语句
$sql = "SELECT * FROM your_table_name WHERE your_column_name LIKE '%中文%'";
$result = $conn->query($sql);

if ($result->num_rows > 0) {
    // 输出数据
    while($row = $result->fetch_assoc()) {
        echo "id: " . $row["id"]. " - Name: " . $row["your_column_name"]. "<br>";
    }
} else {
    echo "0 结果";
}
$conn->close();
?>