PHP supports two methods of page rollback

怪我咯
Release: 2023-03-13 18:54:01
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During the development process, often due to form errors, the information filled in when returning to the page is missing. In order to support page bounce, this can be achieved through two methods.
First, use the Header method to set the message header Cache-control

header('Cache-control: private, must-revalidate');  //支持页面回跳
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Second, use session_cache_limiter Method

//注意要写在session_start方法之前  
session_cache_limiter('private, must-revalidate');
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