Convert a English number to Bengali (Bangla) number

english2bengali.php

<?php
// Convert a English Number to Bengali (Bangla) Number
// REF: https://gist.github.com/nasirkhan/9778412
function en2bnNumber ($number){
    $search_array= array("1", "2", "3", "4", "5", "6", "7", "8", "9", "0");
    $replace_array= array("১", "২", "৩", "৪", "৫", "৬", "৭", "৮", "৯", "০");
    $en_number = str_replace($search_array, $replace_array, $number);

    return $en_number;
}

echo en2bnNumber(1991); // return ১৯৯১