What is boolean?

Answer 1

Variables that hold values "true" or "false"…

Answer 2

boolean is a data type having only two possible values: true or false.

Answer 3

boolean is a type of data values that can hold two values: true or false

Answer 4

y

Answer 5

in php anything or somthing =true and 0000 or empty=false

Answer 6

by using boolean whether condition is true returns "true"
if condition failes returns "false"