use array_map(): $yourArray = array_map(‘strtolower’, $yourArray); In case you need to lowercase nested array (by Yahya Uddin): $yourArray = array_map(‘nestedLowercase’, $yourArray); function nestedLowercase($value) { if (is_array($value)) { return array_map(‘nestedLowercase’, $value); } return strtolower($value); }
Smaller still I quite like: rename ‘y/A-Z/a-z/’ * On case insensitive filesystems such as OS X’s HFS+, you will want to add the -f flag: rename -f ‘y/A-Z/a-z/’ *
WordUtils.capitalize(str) (from apache commons-text) (Note: if you need “fOO BAr” to become “Foo Bar”, then use capitalizeFully(..) instead)
Ruby has a few methods for changing the case of strings. To convert to lowercase, use downcase: “hello James!”.downcase #=> “hello james!” Similarly, upcase capitalizes every letter and capitalize capitalizes the first letter of the string but lowercases the rest: “hello James!”.upcase #=> “HELLO JAMES!” “hello James!”.capitalize #=> “Hello james!” “hello James!”.titleize #=> “Hello James!” … Read more
The are various ways: POSIX standard tr $ echo “$a” | tr ‘[:upper:]’ ‘[:lower:]’ hi all AWK $ echo “$a” | awk ‘{print tolower($0)}’ hi all Non-POSIX You may run into portability issues with the following examples: Bash 4.0 $ echo “${a,,}” hi all sed $ echo “$a” | sed -e ‘s/\(.*\)/\L\1/’ hi all # … Read more
Use str.lower(): “Kilometer”.lower()