javascript-php How to resolve Refresh page form repeat submission??

How does php resolve the Refresh page form repeat submission?? What do you need to do??

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How does php resolve the Refresh page form repeat submission?? What do you need to do??

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Add a hash to judge the

When rendering the page using the session to generate 1 hashes, and then commit the time to submit the hash value to do the match, if inconsistent that is repeated commit.

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Add version control on the line, a simple function, such as Java many frameworks are provided by large PHP is also available, such as the YII2 framework

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