First you don't want to loop though quiries. You want to loop through records which query will return.

Second you could do that, this way:

$conn = db_connect();

$query = mysql_query("SELECT info, username, time FROM newsfeed ORDER BY time DESC LIMIT 10");

while(($row = mysql_fetch_assoc($query)) != NULL) {

    echo "<p>User {$row['username']} just registered {$minutes} min ago</p><br />";
    
}

NB! Assuming, that this db_connect() makes a mysql connection.

First you don't want to loop though queries. You want to loop through records which query will return.

Second you could do that, this way:

$conn = db_connect();

$query = mysql_query("SELECT info, username, time FROM newsfeed ORDER BY time DESC LIMIT 10");

while(($row = mysql_fetch_assoc($query)) != NULL) {

    echo "<p>User {$row['username']} just registered {$minutes} min ago</p><br />";
    
}

NB! Assuming, that this db_connect() makes a mysql connection.