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

(PHP 5.5.0, PHP 7, PECL >= 3.0.0a1) Get the source encoding

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

(No version information available, might only be in Git) Set position to the first character in the text

(PHP 5 >= 5.3.0, PHP 7, PECL intl >= 1.0.0) Gets the primary language for the input locale

(PHP 4 >= 4.2.0, PHP 5, PHP 7) Returns the matched part of a multibyte regular expression

(PHP 4 >= 4.0.6, PHP 5, PHP 7) Convert character encoding

(PHP 5, PHP 7) Decodes multiple MIME header fields at once

(PHP 5 >= 5.3.0, PHP 7, PECL enchant >= 0.1.0 ) Free the broker resource and its dictionnaries

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