Call to undefined function mysql_connect()

#0 /www/platform/core/DatabaseConnector.php(108): DatabaseConnector->connect()
#1 /www/platform/bootstrap.php(64): DatabaseConnector->__construct('localhost:3306', 'phil_com_philin...', 'Philine123!', 'philinehollande...')
#2 /www/index.php(3): require_once('/www/platform/b...')
#3 {main}