查看mysql数据库名称

SHOW DATABASES;

SELECT SCHEMA_NAME FROM information_schema.SCHEMATA;

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

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

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

// 查询数据库列表
$sql = "SHOW DATABASES;";
$result = $conn->query($sql);

if ($result->num_rows > 0) {
    // 输出每个数据库名称
    while($row = $result->fetch_assoc()) {
        echo "数据库: " . $row["Database"] . "<br>";
    }
} else {
    echo "0 结果";
}
$conn->close();
?>