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I tried to put a plugin into my website. But, the moment I activate it, it gives me this message:
I went to functions.php and I saw this. Please, can anyone can help me? Thank you.
My apologies for my English.
All the mysql_ functions were deprecated in PHP 4.3 and the only currently supported version of PHP where it's still available is 5.6. These functions have been completely removed in PHP 7. Switch to using mysqli_ or PDO functions instead.
Required, but never shown