Inserting record on page refresh?

PHP
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How to prevent duplicate entry of data on page refresh in codeigniter?

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Typical approach is to do a redirect after data is posted.

Otherwise it can be a mess. It’s all browser related. Not a server side issue at all.

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As mentioned, the proper method is a redirect and is known as PRG - Post, Redirect, Get.
https://en.wikipedia.org/wiki/Post/Redirect/Get

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