Inner Join tra 5 tabelle

[satifal]

Prova così:

$sql1 = "SELECT t1.art_online AS ao1, t2.art_online AS ao2, t3.art_online AS ao3, t4.art_online AS ao4, t5.art_online AS ao5, 
t1.art_nome AS an1, t2.art_nome AS an2, t3.art_nome AS an3, t4.art_nome AS an4, t5.art_nome AS an5 
FROM $tabella1 t1, $tabella2 t2, $tabella3 t3, $tabella4 t4, $tabella5 t5 
WHERE t1.art_cod = t2.art_cod AND t1.art_cod = t3.art_cod AND t1.art_cod = t4.art_cod AND t1.art_cod = t5.art_cod";

...

echo "ita - $riga[an1] $riga[ao1]
";
echo "fra - $riga[an2] $riga[ao2]
";
echo "ing - $riga[an3] $riga[ao3]
";
echo "spa - $riga[an4] $riga[ao4]
";
echo "ted - $riga[an5] $riga[ao5]
";