(PHP 7) Check if code point has the Lowercase Unicode property

(No version information available, might only be in Git) Create break iterator for title-casing breaks

(PHP >= 5.4.0, PECL intl >= 2.0.0) Checks if a given text contains any confusable characters

(PHP 7) Retrieve the name of a Unicode character

(No version information available, might only be in Git) Check if current position is valid

(No version information available, might only be in Git) Get index of current position

(PHP 7) Check if code point is a printable character

(PHP 5.5.0, PHP 7, PECL >= 3.0.0a1) Add value to field without carrying into more significant fields

(PHP 5 >= 5.3.0, PHP 7, PECL intl >= 1.0.0) Checks if a language tag filter matches with locale

(PHP 5 >= 5.3.0, PHP 7, PECL intl >= 1.0.0) Quick format message