Creating a simple PHP forum tutorial (Part 2)

JinxHacker · #1 (**permalink**) 04-09-2007, 07:47 PM

This file has two cases, if submit was pressed, and if submit was not pressed. If submit was not pressed, then it prints a form for you to type in , your name, a message subject, and a message. If you have pressed submit, it checks first if the required fields of name, subject, and post have been entered
and spits out error message if the have not. If everything has been entered, then it draws the local time both in Unix format and in readable format and inserts all the data of the post along with the timestamps into the database.

Now the reply.php file:

Code:

Code:

<?php

include "connect.php"; //connection string

print "<link rel='stylesheet' href='style.css' type='text/css'>";

print "<table class='maintables'>";

print "<tr class='headline'><td>Reply</td></tr>";

print "<tr class='maintables'><td>";

if(isset($_POST['submit']))

{

   $name=$_POST['name'];

   $yourpost=$_POST['yourpost'];

   $subject=$_POST['subject'];

   $id=$_POST['id'];

   if(strlen($name)<1)

   {

      print "You did not type in a name."; //no name entered

   }

   else if(strlen($yourpost)<1)

   {

      print "You did not type in a post."; //no post entered

   }

   else

   {

      $thedate=date("U"); //get unix timestamp

      $displaytime=date("F j, Y, g:i a");

      //we now strip HTML injections

      $subject=strip_tags($subject);

      $name=strip_tags($name);

      $yourpost=strip_tags($yourpost); 

      $insertpost="INSERT INTO forumtutorial_posts(author,title,post,showtime,realtime,lastposter,parentid) values('$name','$subject','$yourpost','$displaytime','$thedate','$name','$id')";

      mysql_query($insertpost) or die("Could not insert post"); //insert post

      $updatepost="Update forumtutorial_posts set numreplies=numreplies+'1', lastposter='$name',showtime='$displaytime', lastrepliedto='$thedate' where postid='$id'";

      mysql_query($updatepost) or die("Could not update post");

      print "Message posted, go back to <A href='message.php?id=$id'>Message</a>.";

   }



}

else

{

   $id=$_GET['id'];

   print "<form action='reply.php' method='post'>";

   print "<input type='hidden' name='id' value='$id'>";

   print "Your name:<br>";

   print "<input type='text' name='name' size='20'><br>";

   print "Your message:<br>";

   print "<textarea name='yourpost' rows='5' cols='40'></textarea><br>";

   print "<input type='submit' name='submit' value='submit'></form>";



}

print "</td></tr></table>";

?>

Note this is very similar to the post.php file except it passed a hidden parameter id, which indicates which thread you are reply to. Also after you have pressed submit, it checks if the required fields have been filled out, inserts the message with the timestamps and then it updates the original message which you replied to with new timestamps and adds one to the number of replies that message has while putting you as the last replier to that message.

Ok, there you have it, a simple working forum.