<?php
/*
 * CEX.IO - Bitcoin 
 *
 * Query Balance
 *
 * LIMITS: "Do not make more than 600 request per 10 minutes or we will ban your IP address."  If you want more, add a list of proxy servers to CURL.
 *
 * Oct 27, 2013 - They just released their API access last week, so I thought a seed to get some bots started...  -Shawn Reimerdes
 *
 * https://www.cex.io/api
*/


// *** API settings ***

$username = "enterhere";  // Username (NOTE: CASE SENSITIVE!!!)
$key = 'enterhere'; // your API-key
$secret = 'enterhere'; // your Secret-key	
	
$VERSION = '0.10 beta';
// ___________________________________________________________________________________________ ____________ _ ___ _ __  _  .
function cexio_query($path, array $req = array()) {

	$mt = explode(' ', microtime());
 
        $sign = strtoupper(hash_hmac("sha256", $mt[1] . $username . $key, $secret));
       
        $req['key'] = $key;
        $req['signature'] = $sign;
        $req['nonce'] = $mt[1];
       
        # generate the POST data string
        $post_data = http_build_query($req, '', '&');
 
        # generate the extra headers
        $headers = array(
                'key: '.$key,
                'signature: '.$sign,
                'nonce:'.$mt[1]
        );
	
	
	// our curl handle (initialize if required)
	static $ch = null;
	if (is_null($ch)) {
		$ch = curl_init();
		curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
		curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/4.0 (compatible; CEX.IO PHP client v'.$VERSION.'; '.php_uname('s').'; PHP/'.phpversion().')');
	}
	curl_setopt($ch, CURLOPT_URL, $path);
	curl_setopt($ch, CURLOPT_POSTFIELDS, $post_data);
	curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
	curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
 
	// run the query
	$res = curl_exec($ch);
	if ($res === false) throw new Exception('Could not get reply: '.curl_error($ch));
	$dec = json_decode($res, true);
	if (!$dec) throw new Exception('Invalid data received, please make sure connection is working and requested API exists');
	return $dec;
}
// ___________________________________________________________________________________________ ____________ _ ___ _ __  _  .

// example 1: get balance
var_dump(cexio_query('https://cex.io/api/balance/'));
 
/* EXAMPLE OUTPUT:
  
  array(3) {
  ["timestamp"]=>
  string(10) "1382979452"
  ["BTC"]=>
  array(2) {
    ["available"]=>
    string(10) "1.41929714"
    ["orders"]=>
    string(10) "49.26658765"
  }
  ["GHS"]=>
  array(2) {
    ["available"]=>
    string(12) "1194.25621640"
    ["orders"]=>
    string(10) "30.30000000"
  }
}

*/

?>