php - 对 Mysql 数组进行切片

Question

我有一个 mysql 查询

$raw_resultsplaylists = mysql_query("SELECT songs.*, playlists.title as `playlist_title`
                                 FROM song_main AS songs
                                 JOIN songs_in_list AS playlist_songs 
                                  ON songs.ID = playlist_songs.song_id
                                 JOIN playlists 
                                 ON playlist_songs.playlist_id = playlists.ID
                                WHERE playlists.owner_id = '$userid'") or die(mysql_error());

检索如下信息的数组:

  playlist_title      song_name              song_url        song_artist
     -------------------------------------------------------------------        
     foo1               woops                 www.                -
     foo1               blah                  www.                -
     foo2               blop                  www.                -
     foo1               woop                  www.                -
     foo3               bob                   www.                -      
     foo1               dylan                 www.                -

我的问题是如何对 Mysql 数组进行切片，以在单独的数组中获取具有相同 playlist_title 的所有行，以便我可以在单独的 html 表中显示它们:

html 表 1:

 playlist_title      song_name              song_url        song_artist
    -------------------------------------------------------------------        
     foo1               woops                 www.                -
     foo1               blah                  www.                -
     foo1               woop                  www.                -    
     foo1               dylan                 www.                -

html 表 2

    playlist_title      song_name           song_url        song_artist
     -------------------------------------------------------------------        
     foo2               blop                  www.                -
     foo2               dylan                 www.                -

等等...

Answer 1

只是为了画出这个想法..

do{

  $groupedItems[$row['pname']][] = $row; //every row with the same pname will be "grouped" in the same array level

}while..

然后...

foreach($groupedItems as $group){
  //bla bla
}