Get MTS 3g prepaid balance

mtsbalace.php

<?php
function formatSizeUnits($bytes) {
    if ($bytes >= 1073741824) {
        $bytes = number_format($bytes / 1073741824, 2) . ' GB';
    } elseif ($bytes >= 1048576) {
        $bytes = number_format($bytes / 1048576, 2) . ' MB';
    } elseif ($bytes >= 1024) {
        $bytes = number_format($bytes / 1024, 2) . ' KB';
    } elseif ($bytes > 1) {
        $bytes = $bytes . ' bytes';
    } elseif ($bytes == 1) {
        $bytes = $bytes . ' byte';
    } else {
        $bytes = '0 bytes';
    }
    return $bytes;
}

// Getting from MTS
$mdn = $argv[1];
$cache_file = '/tmp/mtsbal.cache';
$data = "mdn=$mdn&billingsystem=TC&connectiontype=2";
$url = "https://selfcare.mtsindia.in/consumer/servicerequest/showBalanceInfoForm.action";
$tuCurl = curl_init();
curl_setopt($tuCurl, CURLOPT_URL, $url);
curl_setopt($tuCurl, CURLOPT_VERBOSE, 0);
curl_setopt($tuCurl, CURLOPT_HEADER, 0);
curl_setopt($tuCurl, CURLOPT_POST, 1);
curl_setopt($tuCurl, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($tuCurl, CURLOPT_POSTFIELDS, $data);

$tuData = curl_exec($tuCurl);

curl_close($tuCurl);

// Getting data usage text
$pattern = "/Data usage available is[\s]+([0-9\.]+)/";
preg_match($pattern, $tuData, $matches);
$bal = -1;
if (count($matches) == 2){
	$bal = formatSizeUnits($matches[1]*1024*1024);
	file_put_contents($cache_file, $bal);
}
else{
	if (file_exists($cache_file)){
		$bal = file_get_contents($cache_file).'c';
	}
}
echo $bal;