php - 更改 while 循环的输出样式

Question

我有一个 while 循环从 MySQL 数据库获取信息，通过 php 输出信息。我的代码是这样的:

while($row = mysql_fetch_array($result)) {
  $output .= '<tr>' . "\r";
  $output .= '<td>' . $row['lnID'] . '</td>' . "\r";
  $output .= '<td>' . $row['lnLine'] . '</td>' . "\r";
  $output .= '<td>' . $row['lnTitle'] . '</td>' . "\r";
  $output .= '<td>' . $row['cLongName'] . '</td>' . "\r";
  $output .= '</tr>' . "\r";
}

cLongName数据库中可以有多个条目，因此它以这种形式输出数据:

lnID  | lnLine  | lnTitle  | cLongName
---------------------------------------
lnID1 | lnLine1 | lnTitle1 | cLongname1
lnID1 | lnLine1 | lnTitle1 | cLongname2
lnID1 | lnLine1 | lnTitle1 | cLongname3
lnID2 | lnLine2 | lnTitle2 | cLongname1
lnID2 | lnLine2 | lnTitle2 | cLongname2
lnID2 | lnLine2 | lnTitle2 | cLongname3
lnID2 | lnLine2 | lnTitle2 | cLongname4
lnID2 | lnLine2 | lnTitle2 | cLongname5

我想要这种格式的数据:

lnID  | lnLine  | lnTitle  | cLongName
---------------------------------------------------------------------------------------
lnID1 | lnLine1 | lnTitle1 | cLongname1, cLongname2, cLongname3
lnID2 | lnLine2 | lnTitle2 | cLongname1, cLongname2, cLongname3, cLongname4, cLongname5

我已经尝试在 while 循环中插入 foreach 循环，但没有成功。任何想法或帮助将不胜感激。

-- 编辑--

我的MySQL查询如下:

$result = mysql_query("
  SELECT
    pcdb_line.lnID, pcdb_line.lnLine, pcdb_line.lnTitle,
    pcdb_colourways.cwLine, pcdb_colourways.cwColID1,
    pcdb_colour_name.cID, pcdb_colour_name.cLongName, pcdb_colour_name.cHex
  FROM pcdb_line
  GROUP BY pcdb_line.lnID
  LEFT JOIN pcdb_colourways
  ON (pcdb_line.lnID = pcdb_colourways.cwLine)
  LEFT JOIN pcdb_colour_name
  ON (pcdb_colour_name.cID = pcdb_colourways.cwColID1)
  LIMIT 50
");

根据 ADW 的回答，我尝试了 group_concat就在 cLongName ，全部pcdb_colour_name但它没有给我任何输出。

-- 编辑 2--

更改 SELECT对此进行查询:

  $result = mysql_query("
    SELECT
      pcdb_line.lnID, pcdb_line.lnLine, pcdb_line.lnTitle,
      pcdb_colourways.cwLine, pcdb_colourways.cwColID1,
      pcdb_colour_name.cID, group_concat(pcdb_colour_name.cLongName) AS cLongNames, pcdb_colour_name.cHex
    FROM pcdb_line
    LEFT JOIN pcdb_colourways
    ON (pcdb_line.lnID = pcdb_colourways.cwLine)
    LEFT JOIN pcdb_colour_name
    ON (pcdb_colour_name.cID = pcdb_colourways.cwColID1)
    GROUP BY pcdb_line.lnID
    LIMIT 50
  ");

允许我使用$output .= "\t\t" . '<td>' . $row['cLongNames'] . '</td>' . "\r";在我的 php 上，给我所需的输出。

Answer 1

您可能最好将数据库查询修改为:

select lnID,lnLine,lnTitle,group_concat(cLongName) from table group by lnID,lnLine,lnTitle;