ridvanbaluyos

((\+[0-9]{2})|0)[.\- ]?9[0-9]{2}[.\- ]?[0-9]{3}[.\- ]?[0-9]{4}
or
((\+63)|0)[.\- ]?9[0-9]{2}[.\- ]?[0-9]{3}[.\- ]?[0-9]{4}

will match these:

+63.917.123.4567  
+63-917-123-4567  
+63 917 123 4567  
+639171234567  

ridvanbaluyos

private function checkQueryString()
{
	if(!empty($_SERVER['QUERY_STRING']) && !preg_match('/^[\p{L}\p{P}\p{S}\p{N}\p{Z}\p{M}\p{Cyrillic}]+$/u', trim(urldecode($_SERVER['QUERY_STRING']))))
	{
		exit;
	}
}

ridvanbaluyos

<?php
function generateMessageId()
{
        return str_pad(rand(), 32, '0', STR_PAD_LEFT);
}

$mobile_number = '';
$client_id = '';
$secret_key = '';
$short_code = '';

ridvanbaluyos

/**
 * This function converts a number into its ordinal format. If the input passed
 * is not an integer, it will attempt to type cast it to integer. 
 * Note: check the edge case when the input is 0 (both for string and integer)
 * Ref: http://stackoverflow.com/questions/3109978/php-display-number-with-ordinal-suffix
 *
 * @param Integer $number - the input. must be an integer
 *
 * @return String $abbreviation - the formatted number.
 *