Omega2+ Crypto Coin Lookup (PHP)

<?php

/****
coins.php (v.04a) by Chuck Brown (http://www.zagnu.com/coin-source.txt)

A simple API call to get the value of a coin in the user's desired currency, great for using in Google Sheets (Use: =IMPORTDATA("yoururl") or if you simply want to grab
the current value of a certain coin. Currently geared towards USD, but hope in next version to add proper currency markings for the amount conversion.


## Changelog

.01 -   First Release
.02 -   Adjustments to code & calling methods.
        Changed from XML output to plaintext for use of IMPORTDATA vs IMPORTXML
.03 -   Removed dual posting of plaintext price for import & added amount conversion.
        Commented code.
.04 -   Added Conversion for ATM without Value Text for Onion pull - Also adding $ for easier formatting on Onion curl call.
.04a -  This is the Omega2+ version, can then be gathered from CLI vs. Installing Apache.
***/


//Get Data
$url = file_get_contents("https://min-api.cryptocompare.com/data/price?fsym=".$argv[1]."&tsyms=".$argv[2]."");
$json = json_decode($url,true);
//Check for Amount to Convert
if ($argv[3] != '') {
$value = $argv[3] * $json[$argv[2]];
$tvalue = round($value,2);
echo "$".$tvalue;
} else {
//no amount? provide plaintext response for dollar amount.
print $json[$argv[2]];
}
?>