Hello, I do not understand almost anything about Php and mysqli. I am trying to implement the system of users for the site, the registry is already working but I can register with the same email as many times as I want. How do I check if email already exists in BD?
So far I only have this, "index.php" form,
config.php (connects to the database);
controlindex.php (sending the values to the DB table)
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