如何使用 mysql 在 docker 中配置和运行旧的 php 5.4 Web 应用程序？

Question

I have an old application based on php 5.4 and mysql. I had developed that in 2015. I want to run that application using docker as changing php version for individual application is not a feasible solution.

What I did is as follows:

Dockerfile

FROM php:5.4-apache

COPY 000-default.conf /etc/apache2/sites-available/000-default.conf

RUN a2enmod rewrite

COPY . /var/www/html/
RUN chown -R www-data:www-data /var/www/html

RUN docker-php-ext-install mysql

CMD ["/usr/sbin/apachectl", "-D", "FOREGROUND"]

docker-compose.yml

version: "3.7"
services:
  webapp:
    build:
      context: ./
      dockerfile: Dockerfile
    ports:
      - "8000:80"
    volumes:
      - .:/var/www/html

    # first load the 'db' service
    depends_on:
    - db
    links:
      - db

  db:
      image: mysql:5.7
      restart: always
      ports:
      - "13306:3306"
      environment:
        MYSQL_USER: root
        MYSQL_PASSWORD: admin
        MYSQL_ROOT_PASSWORD: admin
        MYSQL_DATABASE: pizzabite
      volumes:
      - ./mysql:/var/lib/mysql

The problem here is I was accessing mysql using old mysql methods ie mysql_connect() etc.

database.php

<?php
// Connecting to the database server
$servername = "localhost:13306";
$username = "root";
$password = "admin";
$port = "13306";
$dbname = "pizzabite";


$connect = mysql_connect($servername, $username, $password) or die("<br/>Check your server connection...");

//  $connect = mysqli_connect($servername, $username, $password, $dbname,$port); // I do not want to use mysqli_* function

$selectedDB = mysql_select_db($dbname) or die(mysqli_error());
//include('date.php');
?>
    

This file is included everywhere using include() but when run using docker this file gives error:

Warning: mysql_connect(): No such file or directory in /var/www/html/database.php on line 10

Check your server connection...

When using 0.0.0.0:13306 it gives me this error:

Warning: mysql_connect(): Connection refused in /var/www/html/database.php on line 10

Check your server connection...

docker-compose ps command output:

      Name                       Command               State                 Ports               
---------------------------------------------------------------------------------------------------
pizza_corner_db_1       docker-entrypoint.sh mysqld      Up      0.0.0.0:13306->3306/tcp, 33060/tcp
pizza_corner_webapp_1   /usr/sbin/apachectl -D FOR ...   Up      0.0.0.0:8000->80/tcp 

Answer 1

You are trying to connect to localhost:13306 , because your PC port 13306 is forwarded to the mysql container.

However, that code is executed from the php-apache container, so 'localhost' is the container, not your pc. There is no port 13306 available there.

You should connect to db:13306 because in your docker-compose the database container is called db .

Also, be sure to enable mysql in your php container:

RUN docker-php-ext-install mysql && docker-php-ext-enable mysql