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PHP – How to return character by Unicode code point value using mb_chr()?
In PHP, the mb_chr() function is used to return character by Unicode code point value. This function returns a string having the character identified by the Unicode code point value, encoded in the specified encoding.
Syntax
string mb_chr(int $codepoint, string $encoding)
Parameters
mb_chr() accepts only two parameters: $codepoint and $encoding.
$codepoint− This parameter is used to convert a Unicode codepoint value. For example, 128024 for U+1F418 ELEPHANT.
$encoding− This parameter is the character encoding. If it is absent or null, then the internal character encoding value will be used.
Return Values
This function returns a string containing the requested character if it can be represented in the specified encoding or it returns False on failure.
Note: From PHP 8.0, nullable encoding is allowed.
Example
<pre>
<?php
$str = [66, 64, 0x20AC, 128024];
foreach ($str as $str) {
var_dump(mb_chr($str, 'UTF-8'));
var_dump(mb_chr($str, 'ISO-8859-1'));
}
?>
</pre>Output
string(1) "B" string(1) "B" string(1) "@" string(1) "@" string(3) "€" bool(false) string(4) "🐘" bool(false)
Note: PHP IntlChar::chr() function can be used to convert from PHP Unicode codepoint to character.
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