Question

im just need the easiest way in php to navigate in this result:

$datos = mysql_query(“SELECT * FROM
usuarios LIMIT 0, 30 “);

I mean, how do i do an echo from $datos in each element of the table?

Ex.
Table:

ID Name      LastName
1  Domingo   Sarmiento
2  Juan      Lopez

How can i read for example the second last name?

Answer 1

mysql_query, when used for SELECT statements, returns a resource which you can use to return the found rows:

$result = mysql_query("SELECT * FROM usuarios LIMIT 0, 30 ");

while ($row = mysql_fetch_assoc($result)) {
    echo $row['ID'];
    echo $row['Name'];
    echo $row['LastName'];
}

Refer to the linked documentation for additional uses and functions.

Since you are learning PHP/MySQL it would behoove me to point out the preferred method of interacting with databases: PDO. PDO affords a consistent interface to all supported databases with added benefits such as prepared statements and lowered injection risk, to name a couple.