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在LNMP(Linux, Nginx, MySQL, PHP)環(huán)境中配置PHP與數(shù)據(jù)庫連接池可以提高應(yīng)用程序的性能和響應(yīng)速度。以下是一個(gè)基本的步驟指南,幫助你在LNMP環(huán)境中配置PHP與數(shù)據(jù)庫連接池。
確保你已經(jīng)安裝了Nginx、MySQL和PHP。如果沒有安裝,可以使用以下命令進(jìn)行安裝:
sudo apt update
sudo apt install nginx mysql-server php-fpm php-mysql
編輯Nginx的默認(rèn)配置文件 /etc/nginx/sites-available/default
:
sudo nano /etc/nginx/sites-available/default
找到以下部分并進(jìn)行修改:
server {
listen 80 default_server;
listen [::]:80 default_server;
root /var/www/html;
index index.php index.html index.htm index.nginx-debian.html;
server_name _;
location / {
try_files $uri $uri/ =404;
}
location ~ \.php$ {
include snippets/fastcgi-php.conf;
fastcgi_pass unix:/var/run/php/php7.4-fpm.sock; # 根據(jù)你的PHP版本調(diào)整
}
location ~ /\.ht {
deny all;
}
}
保存并退出編輯器,然后測試Nginx配置:
sudo nginx -t
如果沒有錯(cuò)誤,重啟Nginx:
sudo systemctl restart nginx
編輯PHP-FPM的默認(rèn)配置文件 /etc/php/7.4/fpm/pool.d/www.conf
(根據(jù)你的PHP版本調(diào)整路徑):
sudo nano /etc/php/7.4/fpm/pool.d/www.conf
找到以下部分并進(jìn)行修改:
; Unix user/group of processes
; Note: The user is mandatory. If the group is not set, the default user's group
; will be used.
user = www-data
group = www-data
; The address on which to accept FastCGI requests.
; Valid syntaxes are:
; 'ip.add.re.ss:port' - to listen on a TCP socket to a specific IPv4 address on
; a specific port;
; '[ip:6:addr:ess]:port' - to listen on a TCP socket to a specific IPv6 address on
; a specific port;
; 'port' - to listen on a TCP socket to all addresses
; (IPv6 and IPv4-mapped) on a specific port;
; '/path/to/unix/socket' - to listen on a unix socket.
; Note: This value is mandatory.
listen = /var/run/php/php7.4-fpm.sock
; Set process count to limit the number of processes that can
; share the same socket.
; Note: The default value is calculated based on the number of CPU cores.
pm = dynamic
pm.max_children = 5
pm.start_servers = 2
pm.min_spare_servers = 1
pm.max_spare_servers = 3
保存并退出編輯器,然后重啟PHP-FPM:
sudo systemctl restart php7.4-fpm
在PHP應(yīng)用程序中配置數(shù)據(jù)庫連接池。以下是一個(gè)使用PDO連接MySQL數(shù)據(jù)庫的示例:
<?php
$dsn = 'mysql:host=localhost;dbname=mydatabase;charset=utf8mb4';
$username = 'myuser';
$password = 'mypassword';
try {
$pdo = new PDO($dsn, $username, $password, [
PDO::ATTR_TIMEOUT => 30, // 連接超時(shí)時(shí)間(秒)
PDO::ATTR_PERSISTENT => true, // 使用長連接
PDO::ATTR_EMULATE_PREPARES => false, // 禁用預(yù)處理語句模擬
PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION // 錯(cuò)誤模式為異常
]);
echo "數(shù)據(jù)庫連接成功!";
} catch (PDOException $e) {
echo "數(shù)據(jù)庫連接失敗:" . $e->getMessage();
}
?>
確保你的PHP應(yīng)用程序能夠正確連接到數(shù)據(jù)庫,并且沒有性能問題。你可以使用一些簡單的數(shù)據(jù)庫查詢來測試連接池的效果。
通過以上步驟,你應(yīng)該能夠在LNMP環(huán)境中成功配置PHP與數(shù)據(jù)庫連接池。
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