Select Mange -til Mange; (Doesn't show up)
<?php
		include('connect_mysql.php');
		$sql = "SELECT songname, artistname FROM song, artist, artist_has_song WHERE song.song_id=artist_has_song.song_song_id AND song.song_id = artist_has_song.song_song_id ORDER BY songname";
		$resultat = $kobling->query($sql);
		echo "<div class='tablediv'>";
			echo"<table>";
			echo "<tr>";
					echo"<th class='tabledesc'>Song Name</td>";
					echo"<th class='tabledesc'>Artist Name</td>";
			echo "</tr>";

			while($rad = $resultat->fetch_assoc()) {
				$songname = $rad["songname"];
				$artistname= $rad["artistname"];
				echo "<tr>";
					echo"<td class='tablerow'>$songname</td>";
					echo"<td class='tablerow'>$artistname</td>";
				echo "</tr>";
			}
			echo "</table>";
			echo "</div>";
			$conn->close();
		?>


Insert Mange -til Mange;
<form method='POST'>
		<?php
		if(isset($_POST["leggtilbegge"])) {
			$song_id = $_POST["song_id"];
			$artist_id = $_POST["artist_id"];

			$sql ="INSERT INTO artist_has_song (song_id, artist_id) VALUES ('$song_id', '$artist_id')";

		if($conn->query($sql)) {
			echo "Completed";

		} else {
			echo "Blablalbablablablablablablabl $sql
			($conn->error.";
		}
	}
		?>

		Song Name

		<?php
		$sql = "SELECT * FROM song";
		$resultat = $conn->query($sql);

		echo "<select name='song_id'>";

		while ($rad = $resultat->fetch_assoc()) {
			$song_id = $rad["song_id"];
			$song_name = $rad["songname"];

			echo "<option value=$song_id>$songname</option>";
		}

		echo "</select>";
		?>

		Artist Name

		<?php
		$sql = "SELECT * FROM artist";
		$resultat = $conn->query($sql);

		echo "<select name='artist_id'>";

		while ($rad = $resultat->fetch_assoc()) {
			$song_id = $rad["artist_id"];
			$song_name = $rad["artistname"];

			echo "<option value=$artist_id>$artistname</option>";
		}

		echo "</select>";
		?>
	</form>
		<input type="submit" name="leggtilbegge" value ="Submit">