Convert any string to UTF-8 without knowing the original character set

Question

I need a function or class that ensures that data sent from a form (from anywhere in the world) go to the bank in UTF-8 encoding.

I tried to, $string = iconv(mb_detect_encoding($text), "UTF-8", $text); but has problems (if the input is 'nation' it returns 'in').

I tried to $string = mb_convert_encoding($text, "UTF-8"); but also has problems returns no§

Answer 1

Has a library available that plays this role without you having to be in doubt between which function of the PHP use to convert special character.

That one library works only on the PHP >= 5.3

Clicking here to go to the repository on GITHUB.

Use as follows:

<?php
use \ForceUTF8\Encoding;

echo Encoding::toUTF8("nação");
# retorna: nação

echo Encoding::fixUTF8("nação");
# retorna: nação

[EDIT]

Or, as follows:

 <?php
 require_once "forceUTF8/Encoding.php";
 echo \ForceUTF8\Encoding::fixUTF8("nação");

Or

 <?php
 require_once "forceUTF8/Encoding.php";
 $utf8 = new Encoding;
 echo $utf8::fixUTF8("nação");