i3 status php wrapper for appending currency rate / bitcoin rate in i3 status bar

i3statusphp

#!/usr/bin/env php
<?php
/** 
 * Author: Amado Martinez 
 * License: MIT
 * Date:   2016-07-22
 * 
 * modify .i3status.conf general section:         output_format = "i3bar"
 * modify i3 config: status_command i3status -c .i3status.conf | php -f ~/bin/i3statusphp
 *
 * Example: 
 * $ i3status -c .i3status.conf | php -f i3statusphp
 **/

$stdin	=	fopen('php://stdin', 'r');

$version = fgets($stdin);
$json	=	fgets($stdin);

echo "$version$json";
while(true):
	$json	=	fgets($stdin);
	if($json === false) break;
	$obj	=	json_decode(trim($json, ','));
	$mydata	=	mydata();	
	#array_unshift($obj, $mydata);
	$obj	=	array_merge($mydata, $obj);
	#print_r($obj);continue;
	echo json_encode($obj),",\n";
endwhile;

function mydata(){
	return [(object)[
		'name' => 'Currency',
		'full_text'	=>	currency(1, 'EUR', 'USD'),
		'color'	=>	'#FFFF00'
	], (object)[
		'name' => 'Currency 2',
		'full_text'	=>	currency(1, 'BTC', 'USD'),
		'color'	=>	'#FF00FF'
	]];
}

function currency($amt, $from, $to){
	static $last	=	null;
	if(!isset($last[$amt . $from . $to]))
	{
		$last[$amt . $from . $to]	=	['last' => 0, 'result' => '#processing#'];
	}
	$data	=	&$last[$amt . $from . $to];
	

	if(time() - $data['last'] < 60*60*1) // refresh every 60 minutes
		return $data['result'] ; // . ' ' . $data['last'];

	$data['last']	=	time();
	$res	=	 file_get_contents("http://www.google.com/finance/converter?a=$amt&from=$from&to=$to");
	if(!preg_match('#<div id=currency_converter_result>([\s\S]*?)</div>#', $res, $match)) 
		$lastvalue	=	 "#error#";
	else
		$lastvalue	=	trim(strip_tags($match[1]));	
	$data['result']	=	$lastvalue;
	return $lastvalue;
}