无法在 docker 的本地环境中连接到 cakephp 中的 mysql 数据库

Can`t connect to mysql database in cakephp in a local environment with docker

我使用 mysql、phpmyadmin、php 和 mailhog 设置了一个本地环境,但我无法使用 CakePhp 连接到数据库。

我的连接数据在config/app。php:

'default' => [
          'className' => 'Cake\Database\Connection',
        'driver' => 'Cake\Database\Driver\Mysql',
        'persistent' => false,
        'host' => '172.21.0.4', => I tried localhost, mysql, 172.0.0.1 as well...
        'username' => 'root',
        'password' => 'root',
        'database' => 'mydb1',
        'encoding' => 'utf8mb4',
        'timezone' => 'UTC',
        'cacheMetadata' => true,
        'flags' => [],
        'log' => false,

当我通过 mysqli_connect() 测试连接时(直接在 config/app.php 中),它工作正常:

$link = mysqli_connect("mysql", "root", "root",'mydb1',"3306",'');

if (!$link) {
echo "Error: Unable to connect to MySQL." . PHP_EOL;
echo "Debugging errno: " . mysqli_connect_errno() . PHP_EOL;
echo "Debugging error: " . mysqli_connect_error() . PHP_EOL;
exit;
}

echo "Success: A proper connection to MySQL was made!" . PHP_EOL;
echo "Host information: " . mysqli_get_host_info($link) . PHP_EOL;

$query = "SELECT * FROM test";
$result = mysqli_query($link, $query) or die(mysqli_error($link));
$flag = FALSE;

while ($row = mysqli_fetch_array($result, MYSQLI_BOTH)) 
{
    echo $row['test']."<br>";
}

mysqli_close($link);

非常感谢! 来自奥地利的问候!

首先,确保您没有使用 app_local.php 配置文件。

如果您使用 docker,则主机使用与数据库服务相同的名称

Docker撰写

services:
      db:
        platform: linux/x86_64
        image: mysql:5.7

app.php

'Datasources' => [
    'default' => [
        'host' => 'db', //<------------------