php - MySQL表插入

我想知道我是否在进行正确的表写入，它似乎失败了。

while($n != 1)
  {
   $randstring = "live_".RandomString();
   echo "<br>".$username."<br>";
   echo $randstring."<br>";
   $idcheck = mysql_query("SELECT * FROM streamer_ids WHERE streamer_id='".$randstring."'"); //check for matching random strings
   if (!(mysql_num_rows($idcheck)>0))
   {
    $n=1; //It has found a random string that does not match.
   }
  }
//if it has reached this far, it has a unique id. Now that id is being written to the database.
  $temp = mysql_query("INSERT INTO streamer_ids (username,streamer_id,premium) VALUES(".$username.",".$randstring.","0")");
  $temp->closeCursor();

请注意，最后一部分被严重屠宰，这正是我需要帮助的地方。

最佳答案

您的插入语句中似乎缺少字符串定界符。

即

$temp = mysql_query("INSERT INTO streamer_ids (username,streamer_id,premium) VALUES('".$username."','".$randstring."','0')");

此外，我不知道 $username 值的来源，但您可能应该对其进行清理以防止 SQL 注入(inject)。 IE。在其上运行 addslashes。