Convert Chinese String to UTF8 code.

convert_string_to_utf8.php

<?php
 
function chineseToUnicode( $str ){
    $str = rawurlencode( $str );
	$str = str_replace("%", "", $str);
    return $str;	
}
 
//Print result
$str = "旴";
echo chineseToUnicode( $str );