Warning: mysqli_connect(): php_network_getaddresses: getaddrinfo failed: Name or service not known in /var/www/webapps/html/grt/logement/connect.php on line 12

Warning: mysqli_connect(): (HY000/2002): php_network_getaddresses: getaddrinfo failed: Name or service not known in /var/www/webapps/html/grt/logement/connect.php on line 12
Error !! Unable to connect to database

Warning: mysqli_error() expects parameter 1 to be mysqli, boolean given in /var/www/webapps/html/grt/logement/connect.php on line 16
error :
Warning: mysqli_select_db() expects parameter 1 to be mysqli, boolean given in /var/www/webapps/html/grt/logement/connect.php on line 19

Warning: mysqli_error() expects parameter 1 to be mysqli, boolean given in /var/www/webapps/html/grt/logement/connect.php on line 19
Unable to select database grt