使用query mysql (table wordpress)从字段meta_key中获取一些字符串

// WordPress数据库连接信息
$servername = "localhost";
$username = "your_username";
$password = "your_password";
$dbname = "your_database";

// 创建数据库连接
$conn = new mysqli($servername, $username, $password, $dbname);

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

// 构建SQL查询语句
$sql = "SELECT meta_key FROM wordpress WHERE meta_key = 'your_value'";

// 执行查询
$result = $conn->query($sql);

// 检查查询结果是否为空
if ($result->num_rows > 0) {
    // 遍历查询结果
    while($row = $result->fetch_assoc()) {
        // 输出每一行的meta_key值
        echo "meta_key: " . $row["meta_key"]. "<br>";
    }
} else {
    echo "没有匹配的结果";
}

// 关闭数据库连接
$conn->close();