// one line comment

/* */ mutiple line comment

turn on your PHP errors with error_reporting:

error_reporting(E_ALL);
ini_set('display_errors', 'on');

the main php-fpm configuration file /etc/php/7.0/fpm/php.ini show version php -v
show configuration file path: php -i | grep php.ini reload nginx -s reload make it effective after edit php.ini log path: /var/log/php /var/log/php-fpm/error.log

php -r 'phpinfo()';

restart PHP processor: php-fpm restart; service php-fpm restart /etc/init.d/php-fpm restart sudo systemctl restart php7.0-fpm

Configure Nginx: sudo vi /etc/nginx/sites-enabled/default

Enable Nginx and PHP-FPM on system boot:

sudo systemctl enable nginx.service
sudo systemctl enable php7.1-fpm.service

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 server_domain_or_IP;

    location / {
        try_files $uri $uri/ =404;
    }

    location ~ \.php$ {
        include snippets/fastcgi-php.conf;
        fastcgi_index  index.php;
        fastcgi_pass unix:/run/php/php7.0-fpm.sock;
        #fastcgi_pass   127.0.0.1:9000;
    }

    location ~ /\.ht {
        deny all;
    }
}

Create a PHP File to Test Configuration sudo vi /var/www/html/info.php and visit with http://localhost/info.php

<?php
phpinfo();
?>

php -r 'mysql_connect();' 测试MySQL连接成功 php -r 'phpinfo()'; mysql_config --socket check mysql socket path