get values from database and sort them based on other fields - php

Question

I'm using php and mysql -[codeigniter framework]- and this is my table structure:
Please visit this image to find out table structure
Every single item is separated to three or four parts that these parts made this item's price.
And these items belong to an invoice that will point using refid. refid is invoice_id in fact.
now I need to get a specific invoice items and show them in a table.
this is what I need:
Please visit this image to find out my need
I do not have any problem to get values from database and I will use codeigniter active records.
As you may know, codeigniter database result_array function will give us an associative array. Now I want to separate every item from other and display them in a html table and I have to use rowspan for every item dependence sub items.
Would you please help me to find out how should I use result array to simply show the result in a html table?

Answer 1

so lets assume that you are getting a result array like this,
$result = array(
array(
'id' => 26,
'price' => 100,
'parent' => 0
),
array(
'id' => 27,
'price' => 100,
'parent' => 26
),
array(
'id' => 28,
'price' => 150,
'parent' => 26
),
array(
'id' => 29,
'price' => 100,
'parent' => 26
),
array(
'id' => 30,
'price' => 100,
'parent' => 0
),
array(
'id' => 31,
'price' => 99,
'parent' => 30
),
array(
'id' => 32,
'price' => 75,
'parent' => 30
),
array(
'id' => 33,
'price' => 600,
'parent' => 0
),
array(
'id' => 34,
'price' => 100,
'parent' => 33
),
array(
'id' => 35,
'price' => 50,
'parent' => 33
),
array(
'id' => 36,
'price' => 100,
'parent' => 33
),
);
i cant insert all the data manually in the array from your image, so i have inserted only the needed once,
so now u can do something like this to group the data of same item,
$new_array = array();
$invoice_price = 0;
foreach ($result as $key => $value) {
$invoice_price += $value['price'];
if($value['parent'] == 0){
$new_array[$value['id']]['other_data'][] = $value;
$new_array[$value['id']]['final_price'] = $value['price'];
}else{
$new_array[$value['parent']]['other_data'][] = $value;
$new_array[$value['parent']]['final_price'] += $value['price'];
}
}
now if u print this $new_array, u will get the following output,
Array
(
[26] => Array
(
[other_data] => Array
(
[0] => Array
(
[id] => 26
[price] => 100
[parent] => 0
)
[1] => Array
(
[id] => 27
[price] => 100
[parent] => 26
)
[2] => Array
(
[id] => 28
[price] => 150
[parent] => 26
)
[3] => Array
(
[id] => 29
[price] => 100
[parent] => 26
)
)
[final_price] => 450
)
[30] => Array
(
[other_data] => Array
(
[0] => Array
(
[id] => 30
[price] => 100
[parent] => 0
)
[1] => Array
(
[id] => 31
[price] => 99
[parent] => 30
)
[2] => Array
(
[id] => 32
[price] => 75
[parent] => 30
)
)
[final_price] => 274
)
[33] => Array
(
[other_data] => Array
(
[0] => Array
(
[id] => 33
[price] => 600
[parent] => 0
)
[1] => Array
(
[id] => 34
[price] => 100
[parent] => 33
)
[2] => Array
(
[id] => 35
[price] => 50
[parent] => 33
)
[3] => Array
(
[id] => 36
[price] => 100
[parent] => 33
)
)
[final_price] => 850
)
)
hope u can see that the data is already groups by items.
now just send the data in your view file,
$this->load->view('yourviewfilename',array('data'=>$new_array,'invoice_price'=>$invoice_price));
and to print the table like your screenshot use the following code,
<table border="1">
<tr>
<th>ID</th>
<th>parent</th>
<th>price</th>
<th>final price</th>
</tr>
<?php $count = 0; ?>
<?php foreach ($data as $key => $value) { ?>
<?php $count++; ?>
<?php foreach ($value['other_data'] as $k => $v) { ?>
<tr>
<?php if ($k == 0) { ?>
<td rowspan="<?php echo count($value['other_data']); ?>"><?php echo $count ?></td>
<?php } ?>
<td> <?php echo $v['parent']; ?></td>
<td> <?php echo $v['price']; ?></td>
<?php if ($k == 0) { ?>
<td rowspan="<?php echo count($value['other_data']); ?>"><?php echo $value['final_price']; ?></td>
<?php } ?>
</tr>
<?php } ?>
<?php } ?>
</table>
u will get output like this,
hope u got the point and can print the other data you needed.