<?php

function get($url)
{
    $curl = curl_init();
    curl_setopt($curl, CURLOPT_URL, $url);
    curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
    $result = curl_exec($curl);
    curl_close($curl);
    return $result;
}

$res = get("https://spreadsheets.google.com/feeds/list/1Wjkvk4dneuURFsSCl3j8Nlegw20GUEIxW0rc1JF67hU/od6/public/basic?alt=json");
$res = json_decode($res, true);
var_dump($res['feed']['entry'][0]['content']['$t']);