Strings containing non-alphanumeric characters can be escaped using single or double quotes:

parameters:
    database_password: "my:pass@word!"

如果要使用以@开头的字符串，您必须先转义为@ ，如图书 - 服务容器所述。

If you want to use a string that starts with "@" you must escape it prepending another "@", as stated in The Book - Service Container.

所以，如果你的密码是@mypassword：

So, if your password is "@mypassword":

parameters:
    password1: "@mypassword"  # Will not work
    password2: "@@mypassword" # Will work

这是必需的，因为以单个@开头的字符串用作服务标识符。

This is required because strings starting with a single "@" are used as service identifiers.