cURL inside foreach loop not working - php

Question

I've been trying to run CURL in a foreach loop to extract information from the cryptocompare.com API. As soon as I call the following function, my code just stops working. There is no output.
$fullArray[$symbol]['Price'] = getThePrice($fullArray[$symbol]['Symbol']);
What am I doing wrong? I pasted the code below
include 'helper.php';
$fullArray = array();
//Get List of All Coins and store symbol and ID
$url = "https://min-api.cryptocompare.com/data/all/coinlist";
$jsonArray = getConnection($url);
foreach($jsonArray['Data'] as $value)
{
$symbol = $value['Symbol'];
$fullArray[$symbol]['Symbol'] = $value['Symbol'];
$fullArray[$symbol]['Id'] = $value['Id'];
//call getThePrice function to get Price of ticker
$fullArray[$symbol]['Price'] = getThePrice($fullArray[$symbol]['Symbol']);
}
function getThePrice($input)
{
//Get current price of each coin and store in full array
$url = "https://www.cryptocompare.com/api/data/coinsnapshot/?fsym=".$input."&tsym=USD";
$jsonNewArray = getConnection($url);
if(array_key_exists('PRICE',$jsonNewArray['Data']['AggregatedData']))
{
$returnVariable = $jsonNewArray['Data']['AggregatedData']['PRICE'];
echo "The price of : ".$input." is ".$returnVariable;
}
else{
$returnVariable = "NA";
echo "This price is not available";
}
return $returnVariable;
}
The code in helper.php:
function getConnection($inputHelp)
{
$ch = curl_init();
curl_setopt($ch,CURLOPT_URL,$inputHelp);
curl_setopt($ch,CURLOPT_RETURNTRANSFER,true);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
//curl_setopt($ch,CURLOPT_CONNECTTIMEOUT, 4);
$json = curl_exec($ch);
if(!$json) {
echo curl_error($ch);
}
curl_close($ch);
$jsonArray = json_decode($json, true);
return $jsonArray;
}
Appreciate any help. Thanks in advance.