Gold and Silver Rates API to fetch updated rates with their respective currency and price.

gold-silver-rates.php

<?php

/*#############################
* Developer: Mohammad Sharaf Ali
* Designation: Web Developer
* Version: 1.0
*/#############################

const RATES_API_URL = 'http://goldprice.org/NewCharts/gold/images/goldsilverpricesforcalculators.txt';

/*
 * since the api returns text response so file_get_contents() will suffice
 * else use curl get request
 */ 
$fileContent = file_get_contents(RATES_API_URL);
$silverFileContent = explode('!', $fileContent);
$goldFileContent = explode('@', $silverFileContent[1]);

$currAndRateCollection = array();


/*
 * calculating gold and silver rates in different for each loops
 * as the currencies return may vary across both
 */ 

#gold rates calculation
$currAndRates = explode(';', $goldFileContent[0]);

foreach ($currAndRates as $currAndRate) {
    if (!empty($currAndRate)) {
        $split = explode(',', $currAndRate);
        $currAndRateCollection['gold_rates'][] = array('Currency' => str_replace('XAU_', '', $split[0]),
                                                       'Price' => $split[1]);
    }
}

#silver rates calculation
$currAndRates = explode(';', $silverFileContent[2]);

foreach ($currAndRates as $currAndRate) {
    if (!empty($currAndRate)) {
        $split = explode(',', $currAndRate);
        $currAndRateCollection['silver_rates'][] = array('Currency' => str_replace('XAG_', '', $split[0]),
                                                         'Price' => $split[1]);
    }
}

echo json_encode($currAndRateCollection);