php sort after query fired - php

Question

I want to sort highest to lowest cip and also lowest to highest cip, but cip value is not stored in database, it is calculated as soon as query is fired.
Here is html code to select sorting:
<select name="cip">
<option>Select CIP percentage</option>
<option value="1">Highest To Lowest</option>
<option value="2">Lowest To Highest</option>
</select>
And here is the query that I fired!
$select_applicant = "SELECT j.*, u.id, u.gender
FROM job_apply j
LEFT JOIN users u
ON u.id = j.user_id
WHERE j.job_id = '".$jid."'";
$result_applicant = mysqli_query($con, $select_applicant);
while($row_applicant = mysqli_fetch_assoc($result_applicant))
{
$user_id = $row_applicant["user_id"];
$user_info = get_user_profile_info($user_id);
$ratings_dist = get_skill_ratings_stats($user_id);
$got_it_total_rating = 0;
foreach($ratings_dist as $category=>$rating)
{
$got_it_total_rating = $got_it_total_rating + $rating['score'];
}
$got_it_total_category = count($ratings_dist);
$total_cip = ceil($got_it_total_rating / $got_it_total_category);
echo $total_cip;
}
Function "get_skill_ratings_stats" in php is as below:
function get_skill_ratings_stats($user_id){
global $con;
$items = array();
if($user_id>0)
{
$sql = "SELECT
s.category_id category_id,
c.name as category,
COALESCE(r.score_quality, 0.0) quality,
COALESCE(r.score_timing, 0.0) timing,
COALESCE(r.score_budget, 0.0) budget,
COALESCE(r.score_resp, 0.0) resp,
COALESCE(r.score_pro, 0.0) pro
FROM `user_skills` s
LEFT JOIN `skill_categories` c
ON c.category_id=s.category_id
LEFT JOIN `skill_ratings` r
ON r.skill_id=s.skill_id
WHERE s.user_id = '".(int)$user_id."'
AND s.status = 'active'
ORDER BY category ASC";
$prev_cat = '';
$result = mysqli_query($con, $sql);
// die(mysqli_error($con));
while($row = mysqli_fetch_assoc($result))
{
// print_r($row);
if(!$row['category']) continue;
if($row['category']!=$prev_cat)
{
if(isset($items[$prev_cat]['score']) && $items[$prev_cat]['score']>0 && count($items[$prev_cat])>1)
{
$items[$prev_cat]['score'] = floor(($items[$prev_cat]['score']*20)/(count($items[$prev_cat])-1));
}
$prev_cat = $row['category'];
}
if(!isset($items[$prev_cat]['score'])) $items[$prev_cat]['score'] = 0;
$items[$prev_cat][] = $row;
$items[$prev_cat]['score'] += ($row['quality']+$row['timing']+$row['budget']+$row['resp']+$row['pro'])/5;
}
}
// print_r($items);
// die();
if(isset($items[$prev_cat]['score']) && $items[$prev_cat]['score']>0 && count($items[$prev_cat])>1)
{
$items[$prev_cat]['score'] = floor(($items[$prev_cat]['score']*20)/(count($items[$prev_cat])-1));
}
$tmp = array();
foreach($items as $cat=>$item) {
$tmp[$item['score'].'-'.$cat] = $item;
}
krsort($tmp);
$items = array();
foreach($tmp as $k=>$v) {
$k = preg_replace('#^\d+-#is', '', $k);
$items[$k] = $v;
}
// print_r($tmp);
// print_r($items);
// die();
return $items;
}
Please help me! Having hard time with this!

Answer 1

Assuming that you are using a html table to display this I would just go with http://datatables.net/ , it will give you a lot of sorting options very easily...
Otherwise usort():
function cip($a, $b)
{
if ($a['cip'] == $b['cip']) {
return 0;
}
return ($a['cip'] < $b['cip']) ? -1 : 1;
}
$data = array(
[0] => array('cip' => 1)
[1] => array('cip' => 5)
[2] => array('cip' => 2)
);
usort($data, "cip");
foreach ($a as $key => $value) {
echo "$key: $value\n";
}
Assuming your array looks something like this:
array(
[0] => array('cip' => 1)
[1] => array('cip' => 5)
[2] => array('cip' => 2)
)
It basically loops til everything is sorted, all you do in the call back function is tell it which values to compare...
EDIT:
$total_cips[] = array('user_id' => $user_id, 'cip' => ceil($got_it_total_rating / $got_it_total_category));
Ok So now you have all the total cips in an array with there user_id right?
And outside for loop you call usort($total_cips, "cip");
Then you have a sorted array, if you wish to change the sorting direction just change the greater than to a less than in the cip function

Answer 2

as We0 said,
$total_cips[] = array('user_id' => $user_id, 'cip' => ceil($got_it_total_rating / $got_it_total_category));
but then i used multisort function:
function multi_sort($array, $akey)
{
function compare($a, $b)
{
global $key;
return strcmp($a[$key], $b[$key]);
}
usort($array, "compare");
return $array;
}
And then I call the function as below:
$total_cips = multi_sort($total_cips, $key = 'cip');
Finally this one worked!
Anyways thanks We0 & Ankit

Answer 3

Here:
$select_applicant = "SELECT j.*, u.id, u.gender
FROM job_apply j
LEFT JOIN users u
ON u.id = j.user_id
WHERE j.job_id = '".$jid."";
You are missing closing quote for $jid. It should be:
$select_applicant = "SELECT j.*, u.id, u.gender
FROM job_apply j
LEFT JOIN users u
ON u.id = j.user_id
WHERE j.job_id = '".$jid."'";
This might be one of the cause of your problem.