在 Google Cloud Compute Engine 虚拟机实例上设置 MySQL

Question

I've been moving my site from GoDaddy to Google Cloud and I'm very close to being able to launch. The only missing piece is setting up the database.

I've already installed MySQL on the server and when I run sudo service mysql status , it says that mariadb.service is active (running) and "Taking your SQL requests now..."

I also added the VM instance's IP address to the SQL instance's Connections.

However, when I try to connect on the live site, I get a php error that reads:

PHP Fatal error: Uncaught Error: Class 'mysql' not found in db.php:3

Am I missing a setup step? I followed all of Google's tutorials and help files about this and don't understand what I'm missing.

I installed the libraries with these commands:

sudo apt-get update

sudo apt-get install apache2 php libapache2-mod-php

sudo apt-get install mysql-server

sudo apt-get install mysql-client

I'm trying to connect with this string in my php code:

$dbcon=@new mysql('[SQL instance IP address]','[DB username]','[DB password]','[DB name]');

Answer 1

To solve this problem, do three things:

1) Install the PHP MySQL Extensions:

sudo apt-get install php7.0-mysqlnd

2) Make sure that the extension is enabled in your php.ini file. There will be one for the PHP interpreter and another one for the Apache web server.

3) Change your code to not use the mysql class and use mysqli instead:

$dbcon = new mysqli('localhost', $db_username, $db_password, $db_name);