Compiled PHP 7 missing mysql extension in WordPress

Question

I have built PHP 7 with a configuration that worked for a previous version of PHP. Now my WordPress websites get the message:

Your PHP installation a

Answer 1

mysql_* functions got deleted in PHP 7.0 update your code to mysqli or PDO

Also take a look at prepared statements if you are handling user input. To reduce the chance of SQL injections

An example of mysqli connection string:

connect_errno) {
    echo "Failed to connect to MySQL: (" . $mysqli->connect_errno . ") " . $mysqli->connect_error;
}
?>

An example of pdo connection string:

Note:

That mysqli example handles a connection error