我有一个Dockerfile:
FROM php:7-fpm
RUN apt-get update \
&& apt-get install -y --no-install-recommends libpq-dev \
&& docker-php-ext-install mysqli pdo_pgsql pdo_mysql
然后我在docker-compose.yml文件中:
web:
image: nginx:latest
ports:
- "80:80"
volumes:
- ./frontend:/var/www/html
- ./api:/var/www/html/api
- ./nginx/default.conf:/etc/nginx/conf.d/default.conf
links:
- php
mysql:
image: mariadb
ports:
- "3306:3306"
environment:
- MYSQL_ROOT_PASSWORD=password
- MYSQL_DATABASE=example
volumes:
- ./database:/var/lib/mysql
php:
image: php:7-fpm
volumes:
- ./frontend:/var/www/html
- ./api:/var/www/html/api
links:
- mysql
然后在我的PHP代码中我有:
<?php
$servername = "localhost";
$username = "root";
$password = "password";
try {
$conn = new PDO("mysql:host=$servername;dbname=example", $username, $password);
// set the PDO error mode to exception
$conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
echo "Connected successfully";
}
catch(PDOException $e)
{
echo "Connection failed: " . $e->getMessage();
}
?>
当我连接到我的数据库时,我得到了:
连接失败:找不到驱动程序
如何使用此docker设置下载PDO驱动程序?
答案 0 :(得分:1)
有两个问题:
1。)Dockerfile应该像这样来安装pdo驱动程序:
RUN apt-get update && apt-get install -y libpng12-dev libjpeg-dev libpq-dev \
&& rm -rf /var/lib/apt/lists/* \
&& docker-php-ext-configure gd --with-png-dir=/usr --with-jpeg-dir=/usr \
&& docker-php-ext-install gd mbstring pdo pdo_mysql pdo_pgsql
2.。)要从php连接到mysql,你需要使用dockerfile(mysql)中的名称而不是localhost,如下所示:
$conn = new PDO("mysql:host=mysql;dbname=example", root, password);