<?php
$web = "http://www.tuweb.com";
if (@fopen ($web, "r") {
echo "<iframe src=\"blabla\"></iframe>";
}
?>

<?php
include ("http://www.misitio.com/nn/script_1.php");
?>

<?php
$not = preg_replace ("/\[b\](.+)\[\/b\]/si","<b>\\1</b>",$not);
?>

[b]Algo[/b]

<?php
$not = preg_replace ("/\[url=(http:\/\/www\.([0-9a-z](.+))\.([A-Z]{2,3}))\]([0-9a-z](.+))\[\/url\]/i","<a target=_blank href=\\1>\\5</a>",$not);
?>

[url=NombreWeb]http://www.algo.com[/url]

<?php
$not = preg_replace ("/\[img\]([0-9a-z](.+))\[\/img\]/i","<img src=\"\\1\">",$not);
?>

[img]http://www.algo.com/imagen.algo[/img]

<?php
$not = preg_replace ("/\[quote\](.+)\[\/quote\]/si","<font size=\"1\"><b>Citar</b></font><br><table border=1 cellpadding=3 width=100% bordercolor=#000000 style=\"border-collapse: collapse\" bgcolor=\"#99AFC1\"><td><div class=\"texto\">\\1</div></td></table>",$not);
?>

[quote]Algo[/quote]

<?php
$not = preg_replace ("/\[code\](.+)\[\/code\]/si","<font size=\"1\"><b>Código</b></font><br><table border=1 cellpadding=3 width=100% bordercolor=#000000 style=\"border-collapse: collapse\" bgcolor=\"#F0F0F0\"><td><code class=\"texto\">\\1</code></td></table>",$not);
?>

<?php
include ( "conectar.php" );
$link=conectar();
$consulta= mysql_query( "select * from td_inicia", $link );
?>
<table cellspacing="2" cellpadding="2" border="0">
<?php
while( $filas= mysql_fetch_array( $consulta ) )
{
print ( "<td>Nick: ". $filas["nick"]. "</td><td>Email: ". $filas["email"]. "</td><tr>" );
print( "<td colspan=2>". $filas["mensaje"]. "<td><tr>" );
}
mysql_free_result( $filas );
mysql_close( $link );
?>
</table>