The use of env environment variables in ThinkPHP6

1. Configure env

The root directory after default installation has an .example.env environment variable example file, which can be directly Change it to the .env file and modify it.

APP_DEBUG = true

[APP]
DEFAULT_TIMEZONE = Asia/Shanghai

[DATABASE]
TYPE = mysql
HOSTNAME = 127.0.0.1
DATABASE = test
USERNAME = username
PASSWORD = password
HOSTPORT = 3306
CHARSET = utf8
DEBUG = true

[LANG]
default_lang = zh-cn

2. Call env

• To use Env, in the first generation version of ThinkPHP6 The think\facade\Env facade class must be introduced first, but in subsequent updates, the helper function env() is used directly, which reduces a lot of trouble.

• Obtaining environment variables is not case-sensitive

config## in the directory of ThinkPHP6 #In the folder, database.php is the specific configuration of the database

## The specific content is as follows:

<?php

return [
    // 默认使用的数据库连接配置
    &#39;default&#39;         => env(&#39;database.driver&#39;, &#39;mysql&#39;),

    // 自定义时间查询规则
    &#39;time_query_rule&#39; => [],

    // 自动写入时间戳字段
    // true为自动识别类型 false关闭
    // 字符串则明确指定时间字段类型 支持 int timestamp datetime date
    &#39;auto_timestamp&#39;  => true,

    // 时间字段取出后的默认时间格式
    &#39;datetime_format&#39; => &#39;Y-m-d H:i:s&#39;,

    // 数据库连接配置信息
    &#39;connections&#39;     => [
        &#39;mysql&#39; => [
            // 数据库类型
            &#39;type&#39;            => env(&#39;database.type&#39;, &#39;mysql&#39;),
            // 服务器地址
            &#39;hostname&#39;        => env(&#39;database.hostname&#39;, &#39;127.0.0.1&#39;),
            // 数据库名
            &#39;database&#39;        => env(&#39;database.database&#39;, &#39;&#39;),
            // 用户名
            &#39;username&#39;        => env(&#39;database.username&#39;, &#39;root&#39;),
            // 密码
            &#39;password&#39;        => env(&#39;database.password&#39;, &#39;&#39;),
            // 端口
            &#39;hostport&#39;        => env(&#39;database.hostport&#39;, &#39;3306&#39;),
            // 数据库连接参数
            &#39;params&#39;          => [],
            // 数据库编码默认采用utf8
            &#39;charset&#39;         => env(&#39;database.charset&#39;, &#39;utf8&#39;),
            // 数据库表前缀
            &#39;prefix&#39;          => env(&#39;database.prefix&#39;, &#39;&#39;),

            // 数据库部署方式:0 集中式(单一服务器),1 分布式(主从服务器)
            &#39;deploy&#39;          => 0,
            // 数据库读写是否分离 主从式有效
            &#39;rw_separate&#39;     => false,
            // 读写分离后 主服务器数量
            &#39;master_num&#39;      => 1,
            // 指定从服务器序号
            &#39;slave_no&#39;        => &#39;&#39;,
            // 是否严格检查字段是否存在
            &#39;fields_strict&#39;   => true,
            // 是否需要断线重连
            &#39;break_reconnect&#39; => false,
            // 监听SQL
            &#39;trigger_sql&#39;     => env(&#39;app_debug&#39;, true),
            // 开启字段缓存
            &#39;fields_cache&#39;    => false,
        ],

        // 更多的数据库配置信息
    ],
];

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