What is the best way to stop multiple form submissions using PHP? -

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i wanted know best way stop multiple form submissions using php, can please give example.

on client side can disable form button after clicked. however, provides basic level of security.

your next step prevent via php. in case, best have hidden field within form consists of unique , identifiable token. in order perform check, have keep list of tokens have been used in past , check if has been submitted before.


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