How can i sum dynamic array - php

Question

My code is below
<?php
foreach($query2->result() as $row2)
{
$sub_head_id = $row2->sub_head_id;
?>
<tr>
<?php
$query3 = $this->db->select('farm_id')->get('spf_farm_info'); $she_am_total = 0;
foreach($query3->result() as $row3)
{
$farm_id_inner = $row3->farm_id;
?>
<td>
<?php
$s_h_e_amount = $this->report_model->get_amount($farm_id_inner,$head_id,$sub_head_id);
?>
</td>
<?php
}
?>
<td>
<?php
$total += $s_h_e_amount;
?>
</td>
</tr>
<?php
}
}
?>
Basically i want to know how can i solve it,
<tr>
<?php
$query3 = $this->db->select('farm_id')->get('spf_farm_info'); $she_am_total = 0;
foreach($query3->result() as $row3)
{
?>
<td>
<?php
echo "Total :";
echo $total;
?>
</td>
<?php
}
?>
<td>
Grand Total:
</td>
</tr>
Here, Table column will increase dynamically, and will get different value every td(may be 2/3/4/..) from get_amount function.
Now i want to sum every tr's value according to column.
here it will be sum dynamically which will be show.
Please help me how can i solve properly

Answer 1

Simple SOlution is Take Four Variables
$Cola_total=0;
$Colb_total=0;
$Colc_total=0;
$Cold_total=0;
in your loop sum these Columns
foreach($array as $val){
echo "<tr><td>$val[0]</td> <td>$val[1]</td> <td>$val[2]</td><td>$val[3]</td></tr>";
$Cola_total=+$val[0];
$Colb_total=+$val[1];
$Colc_total=+$val[2];
$Cold_total=+$val[3];
}
and after the loop put the sum in last row
echo "<tr><td>$Cola_total</td> <td>$Colb_total</td> <td>$Colc_total</td><td>$Cold_total</td></tr>";
it may give you some idea

Answer 2

Here , since using Codeigniter, it will be used that select_sum(). then will get proper result.