(PHP 4 >= 4.3.0, PHP 5, PHP 7) Make a string uppercase

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

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

(PHP 4 >= 4.2.0, PHP 5, PHP 7) Returns start point for next regular expression match

(PHP 5.5.0, PHP 7, PECL >= 3.0.0a1) Get the first day of the week for the calendarʼs locale

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

(PHP 5 >= 5.3.0, PHP 7, PECL intl >= 1.0.0) Set a text attribute

(PHP 5.5.0, PHP 7, PECL >= 3.0.0a1) Get the amount of time to be added to local standard time to get local

(PHP 5 >= 5.2.0, PHP 7) Finds the last occurrence of a character in a string within another, case insensitive

(PHP 7) Get the min value for a Unicode property