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;
}