mysql_connect for duplicator

gistfile1.php

static public function mysql_connect( $host, $username, $password, $dbname = '', $port = null ) {
	if ( ! $port ) {
		$post = ini_get("mysqli.default_port");
	}

	if ( 'sock' === substr( $host, -4 ) ) {
		$url_parts = parse_url( $host );
		$dbh = @mysqli_connect( 'localhost', $username, $password, $dbname, null, $url_parts['path'] );
	}
	else {
		$dbh = @mysqli_connect( $host, $username, $password, $dbname, $port );
	}

	return $dbh;
}