Making a Three-in-One Tipping Link
How to tell the QQ, WeChat, and Alipay scanning environments apart by checking the User-Agent, so that a single payment code can redirect to the right tipping page for each app.
# User-Agent
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How to tell the QQ, WeChat, and Alipay scanning environments apart by checking the User-Agent, so that a single payment code can redirect to the right tipping page for each app.