Number Formatting Functions

gistfile1.aw

<?php

/**
 * This function will take a number in a variety of formats and reformat
 * the number to be in E.164 format.  Currently this is really, really ugly,
 * but it works. substr() based function might also work.  Currently US only.
 */
function normalizeNumber($number) {
    $number = trim($number);
    $number = preg_replace("/[^A-Za-z0-9]/", '', $number);
    $number = preg_replace("/\\d{10}$/u", ",+1$0", $number);
    $number = explode(',', $number);
    return $number[1];
}

/**
 * This function will take an E.164 formatted number and put spaces
 * in between each digit so that Twilio's <Say> reads it like a human would.
 */
function spaceNumber($number) {
    $number = trim($number);
    $number = preg_replace("/[^A-Za-z0-9]/", '', $number);
    $number = str_split($number);
    $number = implode(' ', $number);
    return $number;
}

For better or worse, here's what we use in OpenVBX: https://github.com/twilio/OpenVBX/blob/master/OpenVBX/helpers/format_helper.php#L24-70

Trenton, I've made some stylist changes here: https://gist.github.com/1713519

Notice the format of the comments and the removal of the ending ?> tag. We remove the ending tag so we don't accidentally get whitespace into our code.

Thank you for the stylistic corrections! Now as soon as I can figure out how to merge branches...