What will mysql_query(SELECT) return?

Question

MySQL

What is the value returned by the query from the database?

$que = mysql_query($link, "SELECT * FROM `logins` WHERE `login` = '".$name."'");

As I understand it, there will be no such "if a value is found then true, if not found then false".
Leafing through Google, I realized that such a request would return rows in a positive case, but I did not find more information, or I was looking for it well.
Help to decide what is returned from the request in case of success and failure.
Thanks in advance :)

Answer 1

In today's php7+ world - an error for calling an unknown function. Or whatever, if you made your own.
In the museum world, the result resource, or false on error.