Ubuntu LAMP 连接测试步骤
一 测试前准备
二 逐项连通性测试
测试 Apache
测试 PHP
测试 MySQL
三 测试 PHP 与 MySQL 连接
<?php
$link = mysql_connect('localhost', 'root', 'your_password');
if (!$link) {
die('Could not connect: ' . mysql_error());
}
echo 'MySQL connected successfully';
mysql_close($link);
?>
<?php
$servername = "localhost";
$username = "root";
$password = "your_password";
$dbname = "testdb";
$conn = new mysqli($servername, $username, $password, $dbname);
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
echo "Connected successfully to database '$dbname'";
$conn->close();
?>
四 常见问题与快速排查