PHP Useful Helper functions

php_helpers.php

function _alphaOnly($value)
{
  return preg_replace('/[^[:alnum:]\-\.]/u', '', $value);
}

/**
 * @param $number
 *
 * @return string
 */
function convertEnglishToNepali($number)
{
    $mapping = preg_split('//u', "०१२३४५६७८९", null, PREG_SPLIT_NO_EMPTY);

    return str_replace(array_keys($mapping), $mapping, $number);
}

/**
 * @param $number
 *
 * @return string
 */
function convertNepaliToEnglish($number)
{
    $mapping = preg_split('//u', "०१२३४५६७८९", null, PREG_SPLIT_NO_EMPTY);

    return str_replace($mapping, array_keys($mapping), $number);
}