Convert number | integer to words [duplicate]

Question

I would like to convert integer to words, for eg: 29 would become TWENTY NINE and 50 would be FIFTY. How can I achieve this using PHP?

Here is what I have so far but it isn't giving the desired output.

$fees_so = $form_data_fees['field']['4'];
$feesInWords = strval($fees_so);
echo $feesInWords;

Answer 1

You can use NumberFormatter class with SPELLOUT:

$nf = new NumberFormatter("en", NumberFormatter::SPELLOUT);
echo $nf->format(1999); // one thousand nine hundred ninety-nine

Answer 2

I eventually found a solution using the code from @aniket-sahrawat with a little tweaking

Here is the code in case anyone needs this in future...

<?php
$fees_so = $form_data_fees['field']['4'];
$words = filter_var($fees_so, FILTER_SANITIZE_NUMBER_INT);
$nf = new NumberFormatter("en", NumberFormatter::SPELLOUT);
echo $nf->format($words);
?>