( ! ) Warning: mysqli_connect(): php_network_getaddresses: getaddrinfo failed: Name or service not known in /var/www/html/test_db.php on line 2
Call Stack
#	Time	Memory	Function	Location
1	0.0245	390624	{main}( )	.../test_db.php:0
2	0.0245	390624	mysqli_connect ( )	.../test_db.php:2

( ! ) Warning: mysqli_connect(): (HY000/2002): php_network_getaddresses: getaddrinfo failed: Name or service not known in /var/www/html/test_db.php on line 2
Call Stack
#	Time	Memory	Function	Location
1	0.0245	390624	{main}( )	.../test_db.php:0
2	0.0245	390624	mysqli_connect ( )	.../test_db.php:2

Error: Unable to connect to MySQL. Debugging errno: 2002 Debugging error: php_network_getaddresses: getaddrinfo failed: Name or service not known