switch ($value)
{
    1 {"It is one."}
    2 {"It is two."}
    3 {"It is three."}
    4 {"It is four."}
}

Details
To check multiple conditions, use a Switch statement. The Switch statement is equivalent to a series of If statements, but it is simpler. The Switch statement lists each condition and an optional action. If a condition obtains, the action is performed.

Example
PS C:\> $value = 3
>> switch ($value)
>> {
>>     1 {"It is one."}
>>     2 {"It is two."}
>>     3 {"It is three."}
>>     4 {"It is four."}
>> }

It is three.