diritto di replica ai post degli utenti 
chi mi sa dire come posso dare il diritto di replica ad un post tipo facebook twitter ecc ecc ... bacheca degli amici ...

chi mi sa dire come posso dare il diritto di replica ad un post tipo facebook twitter ecc ecc ... bacheca degli amici ...
PHP:
<?php
include 'dbc.php';
page_protect();
?>
<html>
<head>
<title>My Account</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<link href="styles.css" rel="stylesheet" type="text/css">
</head>
<body>
<table width="100%" border="0" cellspacing="0" cellpadding="5" class="main">
<tr>
<td colspan="3"> </td>
</tr>
<tr>
<td width="160" valign="top">
<?php
/*********************** MYACCOUNT MENU ****************************
This code shows my account menu only to logged in users.
Copy this code till END and place it in a new html or php where
you want to show myaccount options. This is only visible to logged in users
*******************************************************************/
if (isset($_SESSION['user_id'])) {?>
<div class="myaccount">
<p><strong>My Account</strong></p>
<a href="myaccount.php">My Account</a><br>
<a href="mysettings.php">Settings</a><br>
<a href="logout.php">Logout </a>
<p>You can add more links here for users</p></div>
<?php }
if (checkAdmin()) {
/*******************************END**************************/
?>
<p> <a href="admin.php">Admin CP </a></p>
<?php } ?>
<p> </p>
<p> </p>
<p> </p></td>
<td width="732" valign="top"><p> </p>
<h3 class="titlehdr">Welcome <?php echo $_SESSION['user_name'];?></h3>
<?php
if (isset($_GET['msg'])) {
echo "<div class=\"error\">$_GET[msg]</div>";
}
?>
<p>This is the my account page</p>
<?php echo $_SESSION[''];?>
<br />
<br />
<br />
<?php
echo $_SESSION['user_id'];
require ("db_connect.php");
if(isset($_POST['submit'])){//****verifico se è stato premuto il submit
$commento=$_POST["commento"];
$commento=ereg_replace("\n","<br>",$commento); //ereg_replace (come tutti gli ereg) è deprecato usa preg_replace
if(get_magic_quotes_gpc()) {
$commento=stripslashes($commento);
}
$commento =mysql_real_escape_string($commento);
$insert = mysql_query("INSERT INTO annunci SET commento='$commento', user_id=".$_SESSION['user_id']."");
}//fine if submit - penso che dovrebbe finire qui, comunque alla fine di tutte le azioni che sosno "azionate" dal form
?>
<div class="content">
<form method="post" action="<?php echo $_SERVER['PHP_SELF']; ?>">
<p>
<label for="commento"></label>
<textarea name="commento" id="commento" cols="55" rows="20"></textarea>
</p>
<p>
<input type="submit" name="submit" id="submit" value="Invia Commento" />
</p>
</form>
</div>
<?php
$id_u=$_SESSION['user_id'];
$query = "SELECT * FROM annunci AS p WHERE p.user_id = '$id_u' OR p.user_id IN (SELECT user_1 FROM relationship AS r WHERE r.user_2 = '$id_u' AND r.amico = 'S') OR p.user_id IN (SELECT user_2 FROM relationship AS r WHERE r.user_1 = '$id_u' AND r.amico = 'S')";
$ris=mysql_query($query);//*******!!!!!!!!!!!!*******non vedo questa istruzione
while ($joke = mysql_fetch_array($ris)) {
$rich=$joke['user_id'];
$query_ut=mysql_query("SELECT * FROM users WHERE id=$rich");//non so come si chiama esattamente il campo id in user
//verifica e correggi eventualmente
$joke_ut=mysql_fetch_array($query_ut);
$user_id = $joke_ut['user_id'];
$user_name = $joke['user_name'];
$commento = $joke['commento'];
echo "<a href=\"profile.php?id=$rich\">".$joke_ut['user_name']."</a><br />";
echo "$commento<br /><br />";
}
?>
</td>
<td width="196" valign="top"> </td>
</tr>
<tr>
<td colspan="3"> </td>
</tr>
</table>
</body>
</html>