How to create insert_batch array in Codeigniter - codeigniter

Question

I'm trying to insert array data using insert_batch in active record as shown in below: Any ideas to prepare the array to insert using insert_batch or any other way?
$detailBill=array(
'TraineeID'=>$inputall['ID'],
'wDate'=>$inputall['wDate'],
'ACH'=>$inputall['Hour'],
'CRA'=>$inputall['Retention'],
'Amount'=>$inputall['PaybleAmt'],
'forMonth'=>$inputall['monthid']
);
$this->db->insert_batch("tbl_submit_coursefee", $detailBill);
Output:
Array
(
[TraineeID]=> Array
(
[0]=>3001
[1]=>3002
[2]=>3003
[3]=>3004
[4]=>3005
[5]=>3006
[6]=>3007
[7]=>3008
[8]=>3009
[9]=>3010
[10]=>3011
[11]=>3012
[12]=>3013
)
[wDate]=> Array
(
[0]=>
[1]=>
[2]=>
[3]=>
[4]=>
[5]=>
[6]=>
[7]=>
[8]=>
[9]=>
[10]=>
[11]=>
[12]=>
)
more field here....
)

Answer 1

I am assuming you want to reorganize arrays. Try this:
$a = array(
'TraineeID' => array(
3001,
3002
),
'wDate' => array(
'123',
'234'
),
'Hour' => array(
12,
13
)
);
$keys = array_keys($a);//counting outer array
if(count($keys[0]) > 0)//checking if inner array has values at all
{
$new_a = [];//initializing expecting array
foreach($a[$keys[0]] as $k => $v)
{
for($i = 0; $i < count($keys); $i++)
{
$new_a[$k][$keys[$i]] = $a[$keys[$i]][$k];
}
}
}
//echo '<pre>', var_dump($new_a);