Why is Sql query with WHERE not working as expected?

Question

PHP

Why is PDO sql query not working as expected?
Need to get all records from a table with an empty field text
$db->query("SELECT * FROM `textes` WHERE `text`=FALSE ");
#doesn't return anything
$db->query("SELECT * FROM `textes` ");
#displays all records from the table
Maybe the syntax is wrong?

Answer 1

SELECT * FROM `textes` WHERE `text`= 0

Answer 2

$db->query("SELECT * FROM `textes` WHERE `text` IS NULL");

Answer 3

$db->query("SELECT * FROM `textes` WHERE `text`='' ");

Answer 4

I'll put in my 5 cents:
those that are null and those that are just empty.