(PHP 4 >= 4.0.6, PHP 5, PHP 7) Set/Get current language

(PHP 4 >= 4.0.6, PHP 5, PHP 7) Encode character to HTML numeric string reference

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

(PHP 4 >= 4.2.0, PHP 5, PHP 7) Regular expression match ignoring case with multibyte support

(PHP 5 >= 5.4.1, PHP 7) Perform a regular expresssion seach and replace with multibyte support using a callback

(PHP 4 >= 4.0.6, PHP 5, PHP 7) Find position of last occurrence of a string in a string

(PHP 5 >= 5.2.0, PHP 7) Finds first occurrence of a string within another

(PHP 4 >= 4.2.0, PHP 5, PHP 7) Setup string and regular expression for a multibyte regular expression match

(PHP 5, PHP 7) Returns an array of all supported encodings

(PHP 4 >= 4.0.6, PHP 5, PHP 7) Parse GET/POST/COOKIE data and set global variable