Multibyte String Functions
PHP Manual

mb_chr

Return character by Unicode code point value

Description

stringfalse mb_chr(int $codepoint, stringnull $encoding = null)

Returns a string containing the character specified by the Unicode code point value, encoded in the specified encoding.

This function complements mb_ord.

Parameters

codepoint

A Unicode codepoint value, e.g. 128024 for U+1F418 ELEPHANT

encoding

The encoding parameter is the character encoding. If it is omitted or null, the internal character encoding value will be used.

Return Values

A string containing the requested character, if it can be represented in the specified encoding or false on failure.

Changelog

Version Description
8.0.0 encoding is nullable now.

Examples

Example #1 Testing different code points

<?php
$values = [65, 63, 0x20AC, 128024];
foreach ($values as $value) {
    var_dump(mb_chr($value, 'UTF-8'));
    var_dump(mb_chr($value, 'ISO-8859-1'));
}
?>

The above example will output:

string(1) "A"
string(1) "A"
string(1) "?"
string(1) "?"
string(3) "€"
bool(false)
string(4) "🐘"
bool(false)

See Also

  • mb_internal_encoding
  • mb_ord
  • IntlChar::ord
  • chr