islower()

Description:

Check if a string is composed of lower case letters.

Syntax:

islower(string)

Note:

The function checks if the string string is composed of lower case letters. If string is an integer, look it up in the ASCII table to see if the corresponding characters are in lower case.

Parameters:

String

String expression/numeric expression

Return value:

Boolean value

Example:

islower("dgfdsgf")

true

islower(97)

true

islower("dsfaAFD")

false

islower("97ffdsf")

false

Related functions:

isupper()