Negin Nickparsa wrote:
I have a code that i get the $_POST's result and then insert them in tables
of Mysql
it can run without error but it'll insert in the table twice and i don't
know why.
when I click the submit then with array_key_exists I go to if statement and
insert it.
i'll show the code if someone have time helping me.


Consistently adding twice? Or occasionally?
I STILL hit problems where people double click a button and the submit happens twice, and have to do some javascript to prevent that since the php end is too late.

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