locale_set_default
Introduction
Human Language and Character Encoding Support
PHP Manual

# iconv

- Introduction
- Installing/Configuring
  - Requirements
  - Installation
  - Runtime Configuration
  - Resource Types
- Predefined Constants
- iconv Functions
  - iconv_get_encoding — Retrieve internal configuration variables of iconv extension
  - iconv_mime_decode_headers — Decodes multiple MIME header fields at once
  - iconv_mime_decode — Decodes a MIME header field
  - iconv_mime_encode — Composes a MIME header field
  - iconv_set_encoding — Set current setting for character encoding conversion
  - iconv_strlen — Returns the character count of string
  - iconv_strpos — Finds position of first occurrence of a needle within a haystack
  - iconv_strrpos — Finds the last occurrence of a needle within a haystack
  - iconv_substr — Cut out part of a string
  - iconv — Convert string to requested character encoding
  - ob_iconv_handler — Convert character encoding as output buffer handler

locale_set_default
Introduction
Human Language and Character Encoding Support
PHP Manual