Hi,
I've got a problem with database abstraction. There are two tables. One with
articles (id,content,author,time) and one with comments on those articles
(id,article_id,content,author,time). My script looks like this:
function show_news($limit){
/* get db parameters and connect to db */
require ("inc/db_parameter.inc.php");
$connect = mysql_connect($dbhost,$dbuser,$dbpasswd) or die("Can't connect to
database");
mysql_select_db($dbname,$connect) or die(mysql_error());
$abfrage = "SELECT id,autor,zeit,betreff,inhalt FROM ts_artikel ORDER BY
zeit DESC" . $limit;
$resultat = mysql_query($abfrage) or die (mysql_error());
/* get articles and display*/
While ($row = mysql_fetch_array($resultat, MYSQL_ASSOC)) {
/* get author */
$abfrage2 = "SELECT vorname,nachname FROM ts_users WHERE id='" .
$row["autor"] ."'";
$resultat2 = mysql_query($abfrage2) or die (mysql_error());
list($autorv, $autorn) = mysql_fetch_row($resultat2);
/* get comments */
$abfrage3 = "SELECT autor,zeit,betreff,inhalt FROM ts_kommentar WHERE
artikel_id='" . $row["id"] . "' ORDER BY zeit ASC";
$resultat3 = mysql_query($abfrage3) or die (mysql_error());
/* generate display */
echo "<table width='100%' cellspacing='0' cellpadding='0' class='formtable'
style='width:100%;margin:0'><tr><td class='artikelhead'
style='text-align:left;'>" . htmlentities($autorv). " " .
htmlentities($autorn);
echo "</td><td class='artikelhead' style='text-align:right'>" . strftime("%A
%d.%m.%Y,%H:%M:%S", $row["zeit"]);
echo "</td></tr><tr><td colspan='2'><b>" . nl2br(chop($row["betreff"])) .
":</b><br />" . nl2br(chop($row["inhalt"])) . "</td></tr>";
/* get comments of there are some */
if (!mysql_num_rows($resultat3) < 1) {
while ($row2 = mysql_fetch_array($resultat3)) {
$abfrage4 = "SELECT vorname,nachname FROM ts_users WHERE id='" .
$row2["autor"] . "'"; /*get author for comments */
$resultat4 = mysql_query($abfrage4) or die (mysql_error());
list($autorkv, $autorkn) = mysql_fetch_row($resultat4);
echo "<tr><td class='commenthead' style='text-align:left'><img
src='img/arrow.png' border='0' height='10' width='10'> " .
htmlentities($autorkv) . " " . htmlentities($autorkn) . "</td><td
class='commenthead' style='text-align:right'>" . strftime("%A
%d.%m.%Y,%H:%M:%S", $row2["zeit"]);
echo "</td></tr><tr><td colspan='2' class='commentcell'><b>" .
nl2br(chop($row2["betreff"])) . ":</b><br />" . nl2br(($row2["inhalt"]));
echo "</td></tr>";
}
}
echo "<tr><td colspan='2' class='artikelcell' style='border-top:1px solid
#808080'><a href='submit_comment.php?artikel=" . $row["id"] . "'>Kommentar
schreiben</a></td></tr></table><br />";
}
}
As you can see, there are some queries within while-loops.
Is there a more elegant and performant way to do those queries? I thought of
JOIN, but I cannot see how to do it.
Any help would be appreciated
TIA Volker
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