Calculating place in a contest script - php

Question

I was suggested to ask this question again but with more depth.
Here is my script:
<?php
//Loggedin
if($_SESSION['login']!=1)
{
print "You must be logged in.";
include($root . 'footer.php');
exit;
}
//Check banned account
elseif($ui['level']=="2"){
print "Sorry but your account is banned.";
include($root . 'footer.php');
exit;
}
//Check email verified
elseif($ui['email_check']=="0"){
print "Sorry but your account has not been verified, to verify your account now please visit <a href='index.php?index=verify&email=".$ui['email']."'>THIS LINK</a>.";
include($root . 'footer.php');
exit;
}
date_default_timezone_set('America/New_York');
$country= $ui['country'];
$dates=mysql_query("SELECT * FROM `contest` WHERE `countries` LIKE '%$country%'");
$timestamp = time();
$getcontests = $os_DB->query("SELECT * FROM contest WHERE date_1 <= '$timestamp' AND date_2 >= '$timestamp' AND countries LIKE '%$country%'");
$num = $os_DB->num($getcontests);
if($num == 0){
print"<td colspan='4'>There are currently no active contests</td>";
}
else
{
while ($dat = mysql_fetch_array($dates)) {
$tname = preg_replace('/\s+/', '', $dat['name']);
$places="(SELECT * FROM `".$tname."_contest` WHERE `username` <> 'cassa' ORDER BY `completed` DESC LIMIT ".$dat['rewards'].")";
$results=mysql_query($places) or die(mysql_error());
$reward = array("".$dat['reward_1'].",".$dat['reward_2'].",".$dat['reward_3'].",".$dat['reward_4'].",".$dat['reward_5'].",".$dat['reward_6'].",".$dat['reward_7'].",".$dat['reward_8'].",".$dat['reward_9'].",".$dat['reward_10']."");
$rewards = implode(",", $reward);
$rewardsa = explode(",", $rewards);
$i=0;
$a=1;
// Offers Contest
if(time() <= $dat['date_2'] && time() >= $dat['date_1'] && $dat['type'] == offer) {
print" <table width ='100%'><tr><th align='center'><font size='4'>{$dat['name']}</font></th><th align='right'><font size='1'>".date("m/d/Y h:i A", $dat['date_1'])."-".date("m/d/Y h:i A", $dat['date_2'])."</font></th></tr></table><br />".$dat['desc']."<br /><font size='1' color='white'>You must complete offers worth at least ".$dat['min_points']." points or $".$dat['min_cash']." to count towards contest!<br /><br />
You must also complete at least ".$dat['min_offers']." offers in order to be eligible for winnings.</font><br /><br />";
print" <table width ='100%'><tr><th align='left'>Place</th><th align='center'>User</th><th align='right'>Prize</th><th align='right'>Completed</th></tr>";
if(mysql_num_rows($results) == 0){
foreach($rewardsa as $rewa){
if(!empty($rewa['$i'])){
if($dat['r_type'] == points){
print" <tr><td align='left'>{$a}</td><td align='center'>......</td><td align='right'>{$rewardsa[$i]} points</td><td align='right'>--</td></tr>";
}
if($dat['r_type'] == cash){
print" <tr><td align='left'>{$a}</td><td align='center'>......</td><td align='right'>$".$rewardsa[$i]."</td><td align='right'>--</td></tr>";
}
$i++;
$a++;
}
}
}
while ($place = mysql_fetch_array($results)) {
if($dat['r_type'] == points){
print" <tr><td align='left'>{$a}</td><td align='center'>{$place['username']}</td><td align='right'>{$rewardsa[$i]} points</td><td align='right'>{$place['completed']}</td></tr>";
}
if($dat['r_type'] == cash){
print" <tr><td align='left'>{$a}</td><td align='center'>{$place['username']}</td><td align='right'>$".$rewardsa[$i]."</td><td align='right'>{$place['completed']}</td></tr>";
}
$i++;
$a++;
}
///Line I am working with///
$getyou= mysql_query("SELECT COUNT(*) AS Place, t.*
FROM ".$tname."_contest t
GROUP BY t.id
HAVING Place <= 3 OR username = '".$ui['username']."'");
$youu = mysql_fetch_array($getyou);
print" <tr><td align='left'>{$youu['Place']}</td><td align='center'>You</td><td align='right'>---</td><td align='right'>{$youu['completed']}</td></tr>";
}
}
}
?>
</table>
With this script I want to be able to show the logged user the place that they currently stand in the contest under the current winners.
This is what I want the table to look like.
-----------------------------------------
| Place | User | Prize | Completed |
| 1 | Someuser1 | $5.00 | 5 |
| 2 | Someuser2 | $2.50 | 3 |
| 3 | Someuser3 | $1.25 | 2 |
| 20 | You | --- | 1 |
-----------------------------------------
This is how it looks
-----------------------------------------
| Place | User | Prize | Completed |
| 1 | Someuser1 | $5.00 | 5 |
| 2 | Someuser2 | $2.50 | 3 |
| 3 | Someuser3 | $1.25 | 2 |
| 1 | You | --- | 1 |
-----------------------------------------
here is my table structure.
Column | Type | Null | Default
--------------------------------------
id |int(11)| No |
username |text | No |
completed|int(11)| No |
As you can see it is all coming from one table and the place isn't defined by the database, but by the script itself.
Hopefully this can clarify more than my last question.
Edit: With Sean's code this is what I get.
-----------------------------------------
| Place | User | Prize | Completed |
| 1 | kikkat | $5.00 | 1 |
| 2 |xXchris744Xx| $2.50 | 1 |
| 3 | kira423 | $1.25 | 1 | /// This line is me
| 7 | You | --- | 1 | /// But it shows my current place as 7
-----------------------------------------

Answer 1

This can be done with a nested query -
$getyou= mysql_query("SELECT
(SELECT count(*)+1 AS rank FROM contest WHERE completed >
(SELECT completed FROM contest WHERE username = '".$ui['username']."' ORDER BY completed DESC LIMIT 1)) as Place,
c.* FROM contest c WHERE username = '".$ui['username']."'");
$youu = mysql_fetch_array($getyou);
print" <tr><td align='left'>{$youu['Place']}</td><td align='center'>You</td><td align='right'>---</td><td align='right'>{$youu['completed']}</td></tr>";
Here is how the query works from the inside out-
The 1st (inside) SELECT gets the completed amount for the username =$ui['username']
SELECT completed FROM contest WHERE username = '".$ui['username']."' ORDER BY completed DESC LIMIT 1
The 2nd (middle) SELECT uses that completed amount and does a count of all the rows that have more completed, adds a 1 to that count, and saves it as the users Place.
SELECT count(*)+1 AS rank FROM contest WHERE completed > '#' // # represents the `completed` amount for the `$ui['username']` that we got in the 1st SELECT
The 3rd/Last (outside) SELECT now just gets the row data for username =$ui['username']
SELECT Place, c.* FROM contest c WHERE username = '".$ui['username']."' // Place was created/defined in early SELECTS, now we just get the rest of the data using c.*
Edit
To add a tiebreaker when one or more have the same number completed, you need to order your query by the id as well. So change your first query to -
$places="(SELECT * FROM `".$tname."_contest` WHERE `username` <> 'cassa' ORDER BY `completed`,`id` DESC LIMIT ".$dat['rewards'].")";
---
And add ORDER BY id and >= to the 2nd query
$getyou= mysql_query("SELECT
(SELECT count(*)+1 AS rank FROM contest WHERE completed >=
--
(SELECT completed FROM contest WHERE username = '".$ui['username']."' ORDER BY completed DESC LIMIT 1) ORDER BY `completed`,`id`) as Place,
-------------------------
c.* FROM contest c WHERE username = '".$ui['username']."'");
Edit #2
Try this new query. The previous one was not selecting the exact row, but the last of the tied.
$getyou= mysql_query("SELECT Place, c.* FROM
(SELECT #Place:=#Place+1 AS Place, c.*
FROM contest c, (SELECT #Place := 0) r ORDER BY completed DESC, id ASC ) c
WHERE username = '".$ui['username']."'");
This new query creates a temporary new column Place, using SELECT #Place := 0, and then we get the users 'Place' using #Place:=#Place+1 AS Place.