php - Issue with extracting array values - php

Question

I'm getting all the HTML post values in the $postdata variable.
$postdata = $this->input->post();
unset($postdata['submit']);
unset($postdata['valve_no']);
Output of $postdata:
Array (
[1] => Array (
[0] => BH123
[1] => H89
)
[2] => Array (
[0] => BH123
[1] => H89
)
[3] => Array (
[0] => BH123
[1] => H89
)
[4] => Array (
[0] => BH123
)
)
$valve_no=$this->input->post('valve_no');
Output of $valve_no:
Array (
[0] => 1
[1] => 2
[2] => 3
[3] => 4
)
Next is I'm trying to merge both arrays
foreach($postdata as $key => $val)
{
$dataSet[] = array ('valve_no'=>$valve_no[$key-1],$postdata[$key]);
}
print_r($dataSet);
Output of $dataSet:
Array (
[0] => Array (
[valve_no] => 1
[0] => Array (
[0] => BH123
[1] => H89
)
)
[1] => Array (
[valve_no] => 2
[0] => Array (
[0] => BH123
[1] => H89
)
)
[2] => Array (
[valve_no] => 3
[0] => Array (
[0] => BH123
[1] => H89
)
)
[3] => Array (
[valve_no] => 4
[0] => Array (
[0] => BH123
)
)
)
The output I'm expecting is below:
Array (
[0] => Array (
[valve_no] => 1
[1] => BH123
[2] => H89
)
[1] => Array (
[valve_no] => 2
[1] => BH123
[2] => H89
)
[2] => Array (
[valve_no] => 3
[1] => BH123
[2] => H89
)
[3] => Array (
[valve_no] => 4
[1] => BH123
)
)
)
As you can see in the expected output I want to extract the sub-array and need to start with [1] instead of [0].
Thanks in advance.

Answer 1

Just change foreach() code like this: (As per your comment)
foreach($postdata as $key => $val)
{
$dataSet[$key-1]['valve_no'] = $valve_no[$key-1];
foreach($val as $k=>$v){
$dataSet[$key-1][$k+1] =$v;
}
}
print_r($dataSet);
Output: https://3v4l.org/P8NKs
Note: In case $postdata sub-array indexes not start with 0,1,2... and still you want them to start with 1,2,... in your result, then do like below:
foreach($postdata as $key => $val)
{
$dataSet[$key-1]['valve_no'] = $valve_no[$key-1];
$srNo = 1;
foreach($val as $v){
$dataSet[$key-1][$srNo] =$v;
$srNo++;
}
}
Output: https://3v4l.org/sLVv5