PHP Character Encoding Requirements
mb_check_encoding
Multibyte String
PHP Manual

# Multibyte String Functions

# References

Multibyte character encoding schemes and their related issues are fairly complicated, and are beyond the scope of this documentation. Please refer to the following URLs and other resources for further information regarding these topics.

- Unicode materials

  » http://www.unicode.org/

- Japanese/Korean/Chinese character information

  » http://examples.oreilly.com/cjkvinfo/doc/cjk.inf

## Table of Contents

- mb_check_encoding — Check if the string is valid for the specified encoding
- mb_convert_case — Perform case folding on a string
- mb_convert_encoding — Convert character encoding
- mb_convert_kana — Convert "kana" one from another ("zen-kaku", "han-kaku" and more)
- mb_convert_variables — Convert character code in variable(s)
- mb_decode_mimeheader — Decode string in MIME header field
- mb_decode_numericentity — Decode HTML numeric string reference to character
- mb_detect_encoding — Detect character encoding
- mb_detect_order — Set/Get character encoding detection order
- mb_encode_mimeheader — Encode string for MIME header
- mb_encode_numericentity — Encode character to HTML numeric string reference
- mb_encoding_aliases — Get aliases of a known encoding type
- mb_ereg_match — Regular expression match for multibyte string
- mb_ereg_replace — Replace regular expression with multibyte support
- mb_ereg_search_getpos — Returns start point for next regular expression match
- mb_ereg_search_getregs — Retrieve the result from the last multibyte regular expression match
- mb_ereg_search_init — Setup string and regular expression for a multibyte regular expression match
- mb_ereg_search_pos — Returns position and length of a matched part of the multibyte regular expression for a predefined multibyte string
- mb_ereg_search_regs — Returns the matched part of a multibyte regular expression
- mb_ereg_search_setpos — Set start point of next regular expression match
- mb_ereg_search — Multibyte regular expression match for predefined multibyte string
- mb_ereg — Regular expression match with multibyte support
- mb_eregi_replace — Replace regular expression with multibyte support ignoring case
- mb_eregi — Regular expression match ignoring case with multibyte support
- mb_get_info — Get internal settings of mbstring
- mb_http_input — Detect HTTP input character encoding
- mb_http_output — Set/Get HTTP output character encoding
- mb_internal_encoding — Set/Get internal character encoding
- mb_language — Set/Get current language
- mb_list_encodings — Returns an array of all supported encodings
- mb_output_handler — Callback function converts character encoding in output buffer
- mb_parse_str — Parse GET/POST/COOKIE data and set global variable
- mb_preferred_mime_name — Get MIME charset string
- mb_regex_encoding — Returns current encoding for multibyte regex as string
- mb_regex_set_options — Set/Get the default options for mbregex functions
- mb_send_mail — Send encoded mail
- mb_split — Split multibyte string using regular expression
- mb_strcut — Get part of string
- mb_strimwidth — Get truncated string with specified width
- mb_stripos — Finds position of first occurrence of a string within another, case insensitive
- mb_stristr — Finds first occurrence of a string within another, case insensitive
- mb_strlen — Get string length
- mb_strpos — Find position of first occurrence of string in a string
- mb_strrchr — Finds the last occurrence of a character in a string within another
- mb_strrichr — Finds the last occurrence of a character in a string within another, case insensitive
- mb_strripos — Finds position of last occurrence of a string within another, case insensitive
- mb_strrpos — Find position of last occurrence of a string in a string
- mb_strstr — Finds first occurrence of a string within another
- mb_strtolower — Make a string lowercase
- mb_strtoupper — Make a string uppercase
- mb_strwidth — Return width of string
- mb_substitute_character — Set/Get substitution character
- mb_substr_count — Count the number of substring occurrences
- mb_substr — Get part of string

PHP Character Encoding Requirements
mb_check_encoding
Multibyte String
PHP Manual