Código PHP:
<?
echo"<table border=0>";
$consulta=mysql_query("SELECT * FROM obras where ob_est='0' order by ob_id desc limit 2");
$contador=1;
while ($a=mysql_fetch_array($consulta))
{
echo "";
$id=$a['ob_id'];
$tn=$a['ob_tit'];
$cont=$a['ob_des_cort'];
$foto="obrasmuni/".$id.".jpg";
if (file_exists($foto)){
$n="";
$s="<img src=".$foto." width=100 />";
}else{
$n="colspan=2";
$s="";}
echo("<tr>
<td align='center'>".$s."</td>
<td align='center'>".$s."</td>
</tr>
<tr>
<td><h1>".$tn."</h1></td>
<td><h1>".$tn."</h1></td>
</tr>
<tr>
<td><div class='noticia2'><span>".$cont."</span><a href='index.php?menu=obprin.php' style='color:red'>ver mas</a></div><hr style='color:#000000'/></td><td><div class='noticia2'><span>".$cont."</span><a href='index.php?menu=obprin.php' style='color:red'>ver mas</a></div><hr style='color:#000000'/></td>
</tr>");
}
echo"</table>";
?>