Combine multiple form array into 1 array - php

Question

["trnx_date"]=>
array(2) {
[0]=>
string(10) "2017-01-10"
[1]=>
string(10) "2017-01-10"
}
["curr_from"]=>
array(2) {
[0]=>
string(3) "USD"
[1]=>
string(3) "PHP"
}
["curr_from_amt"]=>
array(2) {
[0]=>
string(8) "4,000.00"
[1]=>
string(8) "3,000.00"
}
["curr_to"]=>
array(2) {
[0]=>
string(3) "GBP"
[1]=>
string(3) "SAR"
}
["curr_to_amt"]=>
array(2) {
[0]=>
string(8) "3,000.00"
[1]=>
string(8) "2,000.00"
}
["amount"]=>
array(2) {
[0]=>
string(8) "7,000.00"
[1]=>
string(8) "5,000.00"
}
I have the above array which was being submitted. This input was in sets of multiple field which was generated by dynamic table row. How can I group this into 1 (one) array so that I could save in the database? Like this:
[cust_row] => array(
'tranx_date' => "2017-01-10",
'curr_from' => "USD",
'curr_from_amt' => "4,000.00",
'curr_to' => "GBP",
'curr_to_amt' => "3,000.00",
'amount' => "7,000.00"
),
[cust_row] => array(
'tranx_date' => "2017-01-10",
'curr_from' => "PHP",
'curr_from_amt' => "3,000.00",
'curr_to' => "SAR",
'curr_to_amt' => "2,000.00",
'amount' => "5,000.00"
),
All of the above we being populated like this:
$trnx_date = $this->input->post('trnx_date');
$curr_from = $this->input->post('curr_from');
$curr_from_amt = $this->input->post('curr_from_amt');
$curr_to = $this->input->post('curr_to');
$curr_to_amt = $this->input->post('curr_to_amt');
$amount = $this->input->post('amount');

Answer 1

Assuming all the sub-arrays have the same length, you can use a simple for loop that iterates over the index of one of them, and use that to access each of the sub-arrays at that index. Then combine all of them into the associative array for each customer.
$result = array();
$keys = array_keys($array);
$len = count($array[$keys[0]]); // Get the length of one of the sub-arrays
for ($i = 0; $i < $len; $i++) {
$new = array();
foreach ($keys as $k) {
$new[$k] = $array[$k][$i];
}
$result[] = $new;
}

Answer 2

$arr = array(
'trnx_date' => array('2017-01-10', '2017-01-10'),
'curr_from' => array('USD', 'PHP'),
'curr_from_amt' => array('4,000.00', '3,000.00'),
'curr_to' => array('GBP', 'SAR'),
'curr_to_amt' => array('3,000.00', '2,000.00'),
'amount' => array('7,000.00', '5,000.00')
);
$arr_out = array();
$arr_keys = array_keys($arr);
for($i = 0; $i < count($arr[$arr_keys[0]]); $i++) {
$new_arr = array();
foreach($arr_keys as $key => $value) {
$new_arr[$value] = $arr[$value][$i];
}
$arr_out[] = $new_arr;
}
var_dump($arr_out);
Hope it helps!

Answer 3

How about this?
// assume $arr is your original data array
$keys = array_keys($arr);
$result = array();
foreach($keys as $key) {
$vals = $arr[$key];
foreach($vals as $i =>$val) {
if (!is_array($result[$i]) {
$result[$i] = array();
}
$result[$i][$key] = $val;
}
}
var_dump($result);
EDIT: added array check for $result[$i]