LowercaseFormatter.md

LowercaseFormatter

The LowercaseFormatter converts strings to lowercase with proper UTF-8 character support for international text.

Usage

Basic Usage

use Respect\StringFormatter\LowercaseFormatter;

$formatter = new LowercaseFormatter();

echo $formatter->format('HELLO WORLD');
// Outputs: "hello world"

Unicode Characters

use Respect\StringFormatter\LowercaseFormatter;

$formatter = new LowercaseFormatter();

echo $formatter->format('CAFÉ FRANÇAIS');
// Outputs: "café français"

echo $formatter->format('コンニチハ');
// Outputs: "コンニチハ"

Mixed Content

use Respect\StringFormatter\LowercaseFormatter;

$formatter = new LowercaseFormatter();

echo $formatter->format('HELLO WORLD 😊');
// Outputs: "hello world 😊"

API

LowercaseFormatter::__construct

• __construct()

Creates a new lowercase formatter instance.

format

• format(string $input): string

Converts the input string to lowercase using UTF-8 aware conversion.

Parameters:

• $input: The string to convert to lowercase

Returns: The lowercase string

Examples

Input	Output	Description
HELLO	hello	Simple ASCII text
CAFÉ	café	Latin characters with accents
ПРИВЕТ	привет	Cyrillic text
コンニチハ	コンニチハ	Japanese text
HELLO 😊	hello 😊	Text with emoji
ÉÎÔÛ	éîôû	Multiple accented characters

Notes

• Uses mb_strtolower() for proper Unicode handling
• Preserves accent marks and diacritical marks
• Works with all Unicode scripts (Latin, Cyrillic, Greek, CJK, etc.)
• Emoji and special symbols are preserved unchanged
• Combining diacritics are properly handled
• Numbers and special characters remain unchanged
• Empty strings return empty strings