Is there a PHP function that takes an integer and return the unicode character of that number?
No, but you can easily make one:
<?php
/**
* Return unicode char by its code
*
* @param int $u
* @return char
*/
function unichr($u) {
return mb_convert_encoding('&#' . intval($u) . ';', 'UTF-8', 'HTML-ENTITIES');
}
?>
Taken from: PHP Manual - chr - comments
Look at this: http://php.net/manual/en/function.utf8-encode.php
来源：https://stackoverflow.com/questions/9878483/php-equivlent-of-fromcharcode