Question

我在foreach循环中有以下内容（显示我的各种视频），我正在尝试为前三个投票视频显示一些替代文字。我究竟做错了什么（很清楚）......

$sql = "SELECT video_id FROM videos WHERE displayable='y' ORDER BY votes desc LIMIT 0,3";
$result = mysql_query($sql);
$row = @mysql_fetch_array($result);

if(in_array($video->getProperty('video_id')) == $row['video_id']) {
do this...
} else {
do this..
}

Answer 1

mysql_fetch_array只返回一行，你需要遍历你的结果来构建一个包含前三个ID的数组。

$sql = "SELECT video_id FROM videos WHERE displayable='y' ORDER BY votes desc LIMIT 0,3";
$result = mysql_query($sql);
while($row = @mysql_fetch_array($result)) {
  $topthree[] = $row["video_id"];
}

然后你可以使用in_array但语法正确：

if(in_array($video->getProperty('video_id'), $topthree)) {
do this...
} else {
do this..
}

Answer 2

首先用一些错误替换你的代码，防止这样的技术！

$sql = "SELECT video_id FROM videos WHERE displayable='y' ORDER BY votes desc LIMIT 0,3";
if(false != ($result = mysql_query($sql))
{
   $row = mysql_fetch_assoc($result); //Dont need the @ restraint as the result is not false above.
   //Also to get associate keys you need to use mysql_fetch_assoc
   if($video->getProperty('video_id') == $row['video_id'])) //Remove the in array as your directly comparing the to entities with ==
   {
      //Match
   }else
   {
      //Video does not match
   }
}

你的主要问题是mysql_fetch_array（），请研究与mysql_fetch_array（）和mysql_fetch_assoc（）的差异;

-

编辑：我要去的方式

  //Change the query and the loop way.
  $sql = "SELECT video_id FROM videos WHERE displayable='y' AND video_id != '".(int)$video->getProperty('video_id')."' ORDER BY votes desc LIMIT 0,3";
    if(false != ($result = mysql_query($sql))
    //Use the @ restraint if you have E_NOTICE on within E_Reporting
    {
       while($row = mysql_fetch_assoc($result))
       {
            //Print the $row here how you wish for it to be displayed
       }
   }else
   {
       //We have an error?
       echo '<strong>Unable to list top rated videos, please check back later.</strong>'
   }
}

在数组sql查询中

2 个答案: