(PHP 7) Check if code point has the general category "Lu" (uppercase letter)

(PHP >= 5.4.0, PECL intl >= 2.0.0) Get transliterator IDs

(No version information available, might only be in Git) Get the current key

(PHP 5.5.0, PHP 7, PECL >= 3.0.0a1) Check if this time zone uses daylight savings time

(PHP 7) Return Unicode character by code point value

(PHP 5 >= 5.3.0, PHP 7, PECL intl >= 1.0.0) Get formatter locale

(PHP 5 >= 5.3.0, PHP 7, PECL intl >= 1.0.0) Parse string to a timestamp value

(PHP 5 >= 5.3.0, PHP 7, PECL intl >= 1.0.0) Sort array maintaining index association

(PHP 5 >= 5.5.0, PHP 7, PECL intl >= 3.0.0) Formats an object

(PHP 5.5.0, PHP 7, PECL >= 3.0.0a1) Create GMT (UTC) timezone