Warning: mysqli_query() expects parameter 1 to be mysqli, bool given in F:\OpenServer\domains\pivo.vveb.ws\func\maincore\db_maincore_php7.php on line 62

Warning: mysqli_errno() expects parameter 1 to be mysqli, bool given in F:\OpenServer\domains\pivo.vveb.ws\func\maincore\db_maincore_php7.php on line 71

Warning: mysqli_error() expects parameter 1 to be mysqli, bool given in F:\OpenServer\domains\pivo.vveb.ws\func\maincore\db_maincore_php7.php on line 71
Unable to establish connection to MySQL
: