在CentOS上配置PHP数据库连接,通常涉及以下几个步骤:
安装PHP和数据库服务器:
sudo yum install php php-mysqlnd
sudo yum install mysql-server
sudo systemctl start mysqld
和 sudo systemctl enable mysqld
配置数据库:
mysql -u root -p
CREATE DATABASE mydatabase;
CREATE USER 'myuser'@'localhost' IDENTIFIED BY 'mypassword';
GRANT ALL PRIVILEGES ON mydatabase.* TO 'myuser'@'localhost';
FLUSH PRIVILEGES;
EXIT;
config.php
,用于配置数据库连接。config.php
中添加以下代码:<?php
$servername = "localhost";
$username = "myuser";
$password = "mypassword";
$dbname = "mydatabase";
// 创建连接
$conn = new mysqli($servername, $username, $password, $dbname);
// 检查连接
if ($conn->connect_error) {
die("连接失败: " . $conn->connect_error);
}
echo "连接成功";
?>
config.php
文件。$conn
对象执行SQL查询和其他数据库操作。示例:
<?php
include 'config.php';
$sql = "SELECT id, name FROM users";
$result = $conn->query($sql);
if ($result->num_rows > 0) {
// 输出每行数据
while($row = $result->fetch_assoc()) {
echo "id: " . $row["id"]. " - Name: " . $row["name"]. "<br>";
}
} else {
echo "0 结果";
}
$conn->close();
?>
以上步骤应该可以帮助你在CentOS上配置PHP数据库连接。