Introduced in PHP 7: IntlChar class containing static methods for characters

Code

<?php

dump(
    IntlChar::toupper('ä'),
    IntlChar::tolower('Č'),
    IntlChar::totitle('f'),

    IntlChar::isUUppercase('A'),
    IntlChar::isULowercase('A'),
    
    IntlChar::charName('Ü'),
    
    IntlChar::isdigit(3),
    IntlChar::isdigit('3'),
    IntlChar::isdigit(0xFF),
    IntlChar::isdigit(0b01),
    
    "\u{2603}"
);

Result

^ "Ä"

^ "č"

^ "F"

^ true

^ false

^ "LATIN CAPITAL LETTER U WITH DIAERESIS"

^ false

^ true

^ false

^ false

^ "☃"

More Snippets

Key Value pair in Generators
PHP 7.1 iterable type hint
PHP 7.2 Parameter Type Widening - Omit type hints of parent methods

Used Versions

PHP 8.3, Laminas MVC 3.2, Symfony 5.2, Laravel 8.28, PHPUnit 9.5, Doctrine ORM 2.8