PHP中文网2017-05-16 17:07:48
Thank you very much for inviting me to answer, but I don’t know this question either, sorry!
伊谢尔伦2017-05-16 17:07:48
Culture, culture.
Each country’s culture is different. For example, when it comes to time, China may use 2015/5/10, while the United States may use 5/10/2015.
Another example is comma-separated numbers. Most countries use commas as thousandths, but Germany uses a period (period).
In addition, there are some differences in some characters. Therefore, where Culture is generally used, it is usually related to internationalization.
This is probably to match usernames more accurately (because region-specific characters may be used in usernames)