Upload favicon from external website

<?php
$url = 'http://example.com';
$favicon = "https://www.google.com/s2/favicons?domain=".$url;
if($favicon == false) {
 $newimage = "0";
} else {
 $extension = "png";
 $time = date("ymdHis");
 $newimage = $time.".".$extension;
 $destination = "uploads/".$newimage;
 if(@file_put_contents($destination,file_get_contents($favicon))) {
  echo "true";
 } else {
  $newimage = "0";
 }
}
?>