我的语法错误在哪里，我如何加入它们

Question

    $tweet = $row['pledge'] $row['fname'];
{
echo "$tweet";
}

解析错误：语法错误，意外T_VARIABLE

Answer 1

使用concatenation operpator

  $tweet = $row['pledge'].$row['fname'];
  {
     echo "$tweet";
  }

Answer 2

$tweet = $row['pledge'] . $row['fname'];

现在ECHO

echo $tweet;