PHP - Signup System For Multiple Types Of Users

I created a specific Linux user responsible to host a given site, created a postgresql user and database with the same name, and created a pool, and all is good...  Almost.

How can I make the user a system user (i.e. useradd -r my_user) without a home?  Without a home, where should ssh keys go?  Anything need to be changed when creating the postgresql user?

Thanks

Hey all,

I am building a simple cms. I have a posts table and I have an images table. A post has many images and images has a foreign key to the posts table. So when a user edits, updates, creates, and deletes a post, they affect the images related to the post. Sometimes a post can have more than one image, like three images. Hence I rendered this in the view (note that I am using a datamapper that converts tables to objects and fields to key/value pairs):

Code: [Select]
foreach($records as $post){
echo form_open_multipart("homes/update/$post->id"); //File uploads require a multipart form. Default form handling uses the application/x-www-form-urlencoded content type. Multipart forms use the multipart/form-data encoding. //this is critical to pass the id as part of the action attribute of the form, so we can use our params hash to target the id to update the specific record
 
  echo label('Update Title');
echo form_input('title',$post->title);
echo label('Update Body');
echo form_textarea('body',$post->body);

  $images = $post->images->include_join_fields()->get();
if(!is_null($images->image_file_name)){ 
  echo label('Update Images');
foreach($images as $image){
echo form_upload('image_file_name',$image->image_file_name); 
}
}

}
echo form_submit('submit','Update');
The above line of code will render a few input file types. The problem occurs during posting to my update method. It is looking for one parameter from the input file field and so if I upload three different images, it will only look for one and write only one to database:

Code: [Select]
$field_name = 'image_file_name';
  if ( ! $this->upload->do_upload($field_name)){
  $error = array('error' => $this->upload->display_errors());
echo $error['error'];
// redirect('homes/edit');
  }
else {
  $data = array('upload_data' => $this->upload->data());
$image_file_name = $data['upload_data']['file_name'];

Is it possible to do wht I am trying to do? Should I only have on input file type per form submission or is that I need to fix the code to accomodate for multiple submissions by creating an array of sorts?

Thanks for response.

Hello Guys, I would really appreciate some feedback on this one.
Here's the basic simplified code for my bidding system site (querys for when a user sends a new valid bid):
Its working fine but if 2 users send a bid at exactly the same precise moment (even same milliseconds), I have 2 problems (described below code, for better understanding)

Please picture this code as if its happening 2 times at the same time (from 2 different users)

Code: [Select]

$time = microtime(true) * 10000;

$result = mysql_query("UPDATE `AUCTIONS` SET Current_Price = Current_Price + '$increase_price', Bids = Bids + 1, Bidder = '$bidder', Bidder_Time = '$bidder_time' WHERE PId = '$id'");
//grab the current price to save on bidding history DB


if($result)
{
$resultPrice = mysql_query("SELECT Current_Price FROM AUCTIONS WHERE PId = '$id'");
while($row=mysql_fetch_array($resultPrice))
{
$current_price = $row['Current_Price'];
    }

if($resultPrice)
{
$result = mysql_query("INSERT INTO `BIDDING_HISTORY_DB` (Id, Bidder, Bidder_Time, Raw_Time, Ip, Type, Bid_Amount) VALUES ('$id', '$last_bidder', '$last_bidder_time', '$time', '$client_ip', '$credit_type', '$current_price')");
        }
}

If 2 users bid at exactly the same SAME moment, its possible that on BIDDING_HISTORY_DB... I get the Bid_Amount field with the same value (when it should be always 1 number higher than the previous) ( Bid_Amount is coming from $current_price) $current_price grabs the new updated value from the AUCTIONS DB on the first query (Current_Price = Current_Price + '$increase_price').
So its impossible to have 2 values that are the same (at least I am not expecting that), but I realized that if the query from 2 users are being processed at the same time and the UPDATE AUCTIONS query is processed 2 times and AFTER THAT then the SELECT Current_Price FROM AUCTIONS WHERE PId = '$id' is processed on both bids...that is when the Current_Price is grabbed with the same value for both USERS!! Any ideas on how I can find a solution to this ???

The other problem is that I am knowing which bid was made (by which user) before/after because of the $time variable. But sometimes when 2 bids are made at the SAME precise time with the same milliseconds (yes it happens) ... this is when problems arise (because 1 user could have as Current_Price 10.11 and the other one 10.12 and then on DB the user with 10.12 could be shown as if he made the bid first, any ideas/suggestions on how I can find a solution to this?

I need some help with my commenting system. at the moment the code is like this:

<div id="pagepannel">
                <div id="ptop_small">Comments</div>
                <div id="pbottom_small">
          <p>
            <?php 
//
if ($allow_comments == "no") {
?>
          </p>
          <p>No Posting comments here!!!</p>
          <p>&nbsp;</p>
          <p>&nbsp;</p>
          <p>
            <?php } else ?>
          </p>
          <p>
            <?php 
  $sql = "SELECT comment_id, blog_id, posted_by, comment, stamp, email, type FROM jscrgaming_newscomments WHERE blog_id='$blog_id'  ORDER BY comment_id DESC";
$result = mysql_query($sql) or die('Error : ' . mysql_error()); 
      while(list($comment_id, $blog_id_co, $username, $comment, $stamp, $email, $type) = mysql_fetch_array($result, MYSQL_NUM))
{ 
if ($type == 'user'){
?>
          </p>
          <table width="95%" border="0" cellpadding="0" cellspacing="0" class="full_border">
            <tr>
              <td width="75" id="avatar"></td>
              <td><span class="capitalize"><a href="userinfo.php?user=<? echo $username ?>"><strong><? echo $username ?></strong></a></span><strong> posted</strong>: <? echo stripslashes($comment) ?></td>
            </tr>
            <tr>
              <td colspan="2" bgcolor="#CAE4FF" class="date"><? echo $stamp ?>&nbsp;</td>
            </tr>
          </table>
          <p>&nbsp;</p>
          <p>
            <? } 
else{
?>
          </p>
          <table width="95%" border="0" cellpadding="0" cellspacing="0" class="full_border">
            <tr>
              <td><strong> <? echo $username ?>posted</strong>: <? echo stripslashes($comment) ?></td>
            </tr>
            <tr>
              <td bgcolor="#CAE4FF" class="smalltext"><? echo $stamp ?>:: User Was Guest</td>
            </tr>
          </table>
          <p>&nbsp;</p>
          <p>
            <? } }?>
          </p>
          <p>
            <?php 
//
if ($allow_comments == "restricted") {

/**
 * User has already logged in, so display relavent links, including
 * a link to the admin center if the user is an administrator.
 */
if($session->logged_in){?>
          </p>
          <form id="form3" name="form3" method="post" action="user/admin/blog/comment_system/user.php">
            <p>&nbsp;</p>
            <table width="95%" border="0" align="center" cellspacing="2" class="full_border">
              <tr>
                <td colspan="2">You are commenting as <?php echo $session->username;?></td>
              </tr>
              <tr>
                <td width="75">Message</td>
                <td><textarea name="co_comment" cols="30" id="textfield10"></textarea></td>
              </tr>
              <tr>
                <td width="75"><span class="header">
                  <input name="co_username" type="hidden" id="co_username" value="<?php echo $session->username;?>" />
                  <input name="co_blog_id" type="hidden" id="co_blog_id" value="<?php echo $blog_id ?>" />
                </span></td>
                <td><label>
                  <input type="submit" class="blog_button" value=" Post " />
                </label></td>
              </tr>
              <tr>
                <td>&nbsp;</td>
                <td class="smalltext">only 200 charaters can be used</td>
              </tr>
            </table>
          </form>
          <p>&nbsp; </p>
          <p>
            <? } else {?>
          </p>
          <p>&nbsp;</p>
          <table width="95%" border="0" align="center" cellspacing="2" class="full_border">
            <tr>
              <td width="75"><span class="capitalize">Name</span></td>
              <td><label>
                <input name="textfield5" type="text" disabled="disabled" id="textfield5" size="35" />
              </label></td>
            </tr>
            <tr>
              <td width="75">Email</td>
              <td><input name="textfield5" type="text" disabled="disabled" id="textfield6" size="35" /></td>
            </tr>
            <tr>
              <td width="75">Message</td>
              <td><textarea name="textfield5" cols="30" disabled="disabled" id="textfield7">You need to be logged in to comment.</textarea></td>
            </tr>
            <tr>
              <td width="75">&nbsp;</td>
              <td><label>
                <input type="button" class="blog_button" value=" Post " />
              </label></td>
            </tr>
          </table>
          <p>&nbsp;</p>
          <p>
            <?php } } else { 
  if($session->logged_in){?>
          </p>
          <form id="form2" name="form2" method="post" action="user/admin/blog/comment_system/user.php">
            <p>&nbsp;</p>
            <table width="95%" border="0" align="center" cellspacing="2" class="full_border">
              <tr>
                <td colspan="2">You are commenting as <?php echo $session->username;?></td>
              </tr>
              <tr>
                <td width="75">Message</td>
                <td><textarea name="co_comment" cols="30" id="textfield8"></textarea></td>
              </tr>
              <tr>
                <td width="75"><input name="co_username" type="hidden" id="co_username" value="<?php echo $session->username;?>" />
                  <input name="co_blog_id" type="hidden" id="co_blog_id" value="<?php echo $blog_id ?>" /></td>
                <td><label>
                  <input type="submit" class="blog_button" value=" Post " />
                </label></td>
              </tr>
              <tr>
                <td>&nbsp;</td>
                <td><span class="smalltext">only 200 charaters can be used</span></td>
              </tr>
            </table>
          </form>
          <p>&nbsp; </p>
          <p>
            <? } else { ?>
          </p>
          <form id="form1" name="form1" method="post" action="user/admin/blog/comment_system/guest.php">
            <p>&nbsp; </p>
            <table width="95%" border="0" align="center" cellspacing="2" class="full_border">
              <tr>
                <td width="75"><span class="capitalize">Name</span></td>
                <td><label>
                  <input name="co_username" type="text" id="co_username" size="35" />
                </label></td>
              </tr>
              <tr>
                <td width="75">Email</td>
                <td><input name="guest_email" type="text" id="guest_email" size="35" /></td>
              </tr>
              <tr>
                <td width="75">Message</td>
                <td><textarea name="co_comment" cols="30" id="co_comment"></textarea></td>
              </tr>
              <tr>
                <td width="75">Spam</td>
                <td>&nbsp;</td>
              </tr>
              <tr>
                <td colspan="2" align="center"><? require_once('user/captcha/recaptchalib.php');
$publickey = "6Ld_W7sSAAAAAPNTLWrUJLEClFpSSPu1d1Ry5zNR"; // you got this from the signup page
echo recaptcha_get_html($publickey); ?></td>
              </tr>
              <tr>
                <td colspan="2" align="right"><span class="smalltext">only 200 charaters can be used</span>
                  <input name="co_blog_id" type="hidden" id="co_blog_id" value="<?php echo $blog_id ?>" />
                  <input type="submit" class="blog_button" value=" Post " /></td>
              </tr>
            </table>
          </form>
          <p>&nbsp; </p>
          <p>
            <? } } ?>
          </p>
<p>&nbsp;</p>
                  <div></div>
                </div>
              </div>


I, know its a bit messy but lets me see it and design it in Dreamweaver

Any way, for the comment system for users, I want it to show their avatar as well, which is stored in the users table. How would one do this.

I did think of it submitting the avatar along with the post but then it wouldnt update if the user would to change their avatars :\

Any helps???

Anyone know of a script that will allow you to upload a file and converts it to a specified file format?

Folder layout:
script/
script/videos/mp4/                                       }
script/videos/ogg/                                        }    folders for converted files from uploaded files
script/videos/webm/                                     }
script/videos/swf/                                        }

Video player:
Code: [Select]
<video width="320" height="240" controls="controls">
  <source src="script/videos/mp4/<? echo $movie; ?>.mp4" type="video/mp4" />
  <source src="script/videos/ogg/ <? echo $movie; ?> .ogg" type="video/ogg" />
  <source src="script/videos/webm/ <? echo $movie; ?> .webm" type="video/webm" />
<object data="script/videos/mp4/ <? echo $movie; ?> .mp4" width="320" height="240">
<embed src="script/videos/swf/ <? echo $movie; ?> .swf" width="320" height="240">
Your browser does not support video
</embed>
</object>
</video>

I have searched and searched the web for an answer and cannot find one pleas help?