<?php
$base = "https://api.btcturk.com";
$method = "/api/v2/ticker?pairSymbol=BTC_TRY";
$uri = $base.$method;

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $uri);
curl_setopt($ch, CURLOPT_HTTP_VERSION, "CURL_HTTP_VERSION_1_2");
curl_setopt($ch, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_V4);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$result = curl_exec($ch);

if (curl_errno($ch)) {
print_r(curl_error($ch));
}
$answer = json_decode($result);
print_r($answer);

{
"data": [
{
"pair": "BTCTRY",
"pairNormalized": "BTC_TRY",
"timestamp": 1570024156166,
"last": 47500,
"high": 48710,
"low": 47000,
"bid": 47472,
"ask": 47670,
"open": 47988,
"volume": 304.41,
"average": 47850.41,
"daily": -318,
"dailyPercent": -1.02,
"denominatorSymbol": "TRY",
"numeratorSymbol": "BTC"
    },
}

echo $answer ["data"] ["pair"];