metadata.php

<?php
$songData = file_get_contents('/var/www/roomradio/songtitle.txt');

preg_match('/([a-zA-Z])(.*)(?=\ -)/',$songData, $artist);
$imageQuery=str_replace(' ', '+', $artist[0]);
$imageQuery=$imageQuery."+artwork";

function get_url_contents($url) {
    $crl = curl_init();

    curl_setopt($crl, CURLOPT_USERAGENT, 'Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; .NET CLR 1.1.4322)');
    curl_setopt($crl, CURLOPT_URL, $url);
    curl_setopt($crl, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($crl, CURLOPT_CONNECTTIMEOUT, 5);

    $ret = curl_exec($crl);
    curl_close($crl);
    return $ret;
}

$imgUrl = '';
$imageLinksArray = [];
$imageExists = false;
if (($h = fopen("/var/www/roomradio/imageLinks.csv", "r")) !== FALSE) 
{
  while (($data =fgetcsv($h, 1000, ",")) !== FALSE)
  {
    $imageLinksArray[] = $data;
  }
  fclose($h);
}

for ($i = 0; $i < count($imageLinksArray); $i++) {
  if ($imageQuery == $imageLinksArray[$i][0])
  {
    $imageExists=true;
    $imgUrl = $imageLinksArray[$i][1];
    break;
  }
}

if ($imageExists == false)
{
        $url ='https://www.googleapis.com/customsearch/v1?key=AIzaSyAliM8GjxXcPKMkZiPiDxlGhLI25mZHhsU&cx=016998421560717524457:0bctl8e-qsm&q='. trim($imageQuery).'&searchType=image&fileType=jpg';
        function get_url_contents2($url){
                $crl = curl_init();
                $timeout = 5;
                curl_setopt ($crl, CURLOPT_URL,$url);
                curl_setopt ($crl, CURLOPT_RETURNTRANSFER, 1);
                curl_setopt ($crl, CURLOPT_CONNECTTIMEOUT, $timeout);
                $ret = curl_exec($crl);
                curl_close($crl);
                return $ret;
        }
        $json = get_url_contents2($url);
        $data = json_decode($json);
        if ($json!=null){
                $i = 0;
		if (!empty($data->items[0]->link)) {
		  $imgUrl = $data->items[0]->link;
		}
		else {
		 print("Url not returned");
		}
                $imageData[0] = $imageQuery;
                $imageData[1] = $imgUrl;
                $fp = fopen('/var/www/roomradio/imageLinks.csv', 'a');
                fputcsv($fp,$imageData,',', '"');
                fclose($fp);
        }
}
print($imgUrl);
?>