测试nginx php mysql连接

<?php
    $servername = "127.0.0.1";
    $username = "root";
    $password = "123456";
    // 创建连接
    $conn = mysqli_connect($servername, $username, $password);
    // 检测连接
    if (!$conn) {
        die("Connection failed: " . mysqli_connect_error());
    }
    echo "php可以连接MySQL";
?>
<img style='width:100%;height:100%;' src=https://blog.driverzeng.com/zenglaoshi/php_mysql.png>