The first part of the script performs basic validation on submitted form data.
该脚本的第一部分对所提交的表单数据执行基本验证。
This validation will only happen if the form was submitted via POST.
仅当通过POST提交表单时，才会发生此种验证。
Grief is a form of validation; it says the wound mattered.
哀痛是一种认可，它说明这个伤很痛。
Grief is a form of validation; it says the wound mattered.
哀痛是一种认可，它说明这个伤很痛。
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