phpではクエリが非常に遅い（> 30秒）が、phpmyadminでクエリを実行すると速い

このような結合クエリを使用すると、同じ結果が得られ、機能します:)ネストされたクエリに最大40〜50秒かかる理由はまだわかりません。助けてくれたユーザーDibakarPaulに感謝します。

$sql1 = "Select distinct title, artist, album 
from songs where id not in(Select distinct song.id
from songs song inner join playlist playlist 
on playlist.song_id=song.id
inner join playlists playlists 
on playlists.playlist_id=playlist.playlist_id
and playlists.name = '$playlist_name')";

$sql2 = "Select distinct song.title, song.artist, song.album
from songs song inner join playlist playlist 
on playlist.song_id=song.id
inner join playlists playlists 
on playlists.playlist_id=playlist.playlist_id
and playlists.name = '$playlist_name'";