Fatal error: Uncaught mysqli_sql_exception: Duplicate column name 'nbH' in C:\Program Files (x86)\EasyPHP-Devserver-17\eds-www\HHH\creationTable.php:33 Stack trace: #0 C:\Program Files (x86)\EasyPHP-Devserver-17\eds-www\HHH\creationTable.php(33): mysqli->query('\r\nALTER TABLE h...') #1 {main} thrown in C:\Program Files (x86)\EasyPHP-Devserver-17\eds-www\HHH\creationTable.php on line 33