Randomly generate four yards of English
//產生隨機碼，預設四碼，約七百次會出現碰撞
function get_random_key($length = 4)
{
$permitted_chars = '1234567890abcdefghijklmnopqrstuvwxyxABCDEFGHIJKLMNOPQRSTUVWXYX';
return substr(str_shuffle($permitted_chars), 0, $length);
}
I believe that many people are familiar with PHP trait, because Laravel can be seen everywhere, but I still write it and share it with those who are destined. PHP trait allows two different CLASS to use the same method. It not only reduces the complexity, but also allows the code to be reused. So it should be very convenient to put a Browser series function on Laravel's ViewServiceProvider 😝
Maybe in the old version of the docker environment, when using Docker compose to start the container, you will encounter the following error: Error response from daemon: could not find an available, non-overlapping IPv4 address pool among the defaults to assign to the network This is actually this It is a symptom of running out of default-address-pools. In some environments, docker-compose will use the private network of Class B by default. The private IP of segment 172 has a range, from 172.16.0.0 to 172.31.255.255. That is to say, when we start a docker-compose Project, it will eat a private section of Class B, which is very heroic.
This article describes how to pull out the database service of phpenv to an independent environment. PHPENV can define database services in SERVICE through environment variables. If necessary in the development environment, we can easily restart all services, nginx, fpm and db through commands such as ./start and ./restart. But if it is in online mode, I don't want to restart the website, even the entire DB is restarted. For example, when the php version is updated, the DB does not need to be restarted.
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