Dear Friends,

I have a reply form which writes to database, however it gives an error 
posted below.
Guidance, please.

Error when I keep op like 'op'
Notice: Undefined index: op in 
\\premfs15\sites\pre15\mrbupeace\webroot\replytopost.php on line 7
error when I keep op like op without inverted comma's gives two different 
Notice: Use of undefined constant op - assumed 'op' in 
\\premfs15\sites\pre15\mrbupeace\webroot\replpost.php on line 7

Notice: Undefined index: op in 
\\premfs15\sites\premium15\mrbushforpeace\webroot\replytopost.php on line 7
Code of the script
//connect to server and select database; we'll need it soon
$conn = mysql_connect("", "mr", "p") or die(mysql_error());
mysql_select_db("mr",$conn)  or die(mysql_error());

//check to see if we're showing the form or adding the post
if ($_POST['op'] != "addpost") {
   // showing the form; check for required item in query string
   if (!$_GET['post_id']) {
        header("Location: topiclist.php");

   //still have to verify topic and post
   $verify = "select ft.topic_id, ft.topic_title from forum_posts as fp left 
join forum_topics as ft on fp.topic_id = ft.topic_id where fp.post_id = 
   $verify_res = mysql_query($verify, $conn) or die(mysql_error());
   if (mysql_num_rows($verify_res) < 1) {
       //this post or topic does not exist
       header("Location: topiclist.php");
   } else {
       //get the topic id and title
       $topic_id = mysql_result($verify_res,0,'topic_id');
       $topic_title = stripslashes(mysql_result($verify_res, 

       print "
       <title>Post Your Reply in $topic_title</title>
       <h1>Post Your Reply in $topic_title</h1>
       <form method=post action=\"$_SERVER[PHP_SELF]\">
       <p><strong>Your E-Mail Address:</strong><br>
       <input type=\"text\" name=\"post_owner\" size=40 maxlength=150>

       <P><strong>Post Text:</strong><br>
       <textarea name=\"post_text\" rows=8 cols=40 wrap=virtual></textarea>

       <input type=\"hidden\" name=\"op\" value=\"addpost\">
       <input type=\"hidden\" name=\"topic_id\" value=\"$topic_id\">

       <P><input type=\"submit\" name=\"submit\" value=\"Add Post\"></p>

} else if ($_POST[op] == "addpost") {
   //check for required items from form
   if ((!$_POST['topic_id']) || (!$_POST['post_text']) || 
(!$_POST['post_owner'])) {
       header("Location: topiclist.php");

   //add the post
   $add_post = "insert into forum_posts values ('', '$_POST[topic_id]', 
'$_POST[post_text]', now(), '$_POST[post_owner]')";
   mysql_query($add_post,$conn) or die(mysql_error());

   //redirect user to topic


Reply via email to