MySQL select random records with limit

Question

I have a query for selecting random records with a limit of 6.

$query = $this->pdo->prepare("SELECT * FROM `" . $this->table . "` ORDER BY rand() LIMIT " . $limit);

If I set the limit to 6, it will sometimes only show 4 records, sometimes 5.
How can I make it always show 6?
I have more than 6 records in the database.

I looked at some questions around this here but couldn't find a clear answer.

Answer 1

$query = $this->pdo->prepare("SELECT * FROM `" . $this->table . "` ORDER BY rand() LIMIT $limit " );

Answer 2

Try with : SELECT RAND(6)

$query = $this->pdo->prepare("SELECT * FROM " . $this->table . " ORDER BY RAND(6) LIMIT " . $limit);