replace 0 to 62 or other country code for whatsapp link wa.me

phone.php

<?php
// replace 081234567890 or 6281234567890 or +6281234567890 or 62 812 34 567 890
// to 6281234567890 for whatsapp link http://wa.me/62xxxxx
function phoneFormat($number, $country_code = '62')
{
    $number = str_replace('+', '', $number);
    $number = str_replace(' ', '', $number);
    $number = preg_replace('/^0/', $country_code, $number);
    return $number;
}