Matching array value (PHP Array) - php

Question

Input post :
$_POST['dateSlot']
$_POST['timeStart']
$_POST['timeEnd']
$_POST['quota']
These input post will resulting the below array.
Array
(
[dateSlot] => Array
(
[0] => 2018-04-05
[1] => 2018-04-05
[2] => 2018-04-05
)
[timeStart] => Array
(
[0] => 11:06 AM
[1] => 10:06 AM
[2] => 9:06 AM
)
[timeEnd] => Array
(
[0] => 11:06 AM
[1] => 9:06 AM
[2] => 7:06 AM
)
[quota] => Array
(
[0] => 12
[1] => 10
[2] => 10
)
)
I'm trying to foreach them to match the index key and form another array with this idea. Not so sure if can get the value I want :
foreach ($_POST['dateSlot'] as $k => $val) {
foreach ($_POST['timeStart'] as $k2 => $val2) {
foreach ($_POST['timeEnd'] as $k3 => $val3) {
foreach ($_POST['quota'] as $k4 => $val4) {
if($k == $k2 && $k == $k3 && $k == $k4){
$timeslots[$k]['date_slot'] = $val;
$timeslots[$k]['time_start'] = $val2;
$timeslots[$k]['time_end'] = $val3;
$timeslots[$k]['event_quota'] = $val4;
}
}
}
}
}
By that foreach, I'm getting the error Illegal string offset for date_slot, time_start, time_end, and event_quota
Based on the rows in the array, my goal is to re-form the array so that they all will be combined together to form 3 rows.
Example :
Array
(
[0] => Array
(
[date_slot] => 2018-04-05
[time_start] => 11:06 AM
[time_end] => 11:06 AM
[event_quota] => 12
)
[1] => Array
(
[date_slot] => 2018-04-05
[time_start] => 10:06 AM
[time_end] => 9:06 AM
[event_quota] => 10
)
[2] => Array
(
[date_slot] => 2018-04-05
[time_start] => 9:06 AM
[time_end] => 7:06 AM
[event_quota] => 10
)
)

Answer 1

Another approach to grouping this kind of data without needing to know the key names in advance.
This works by using the first row's data current( $data ) as the main iterator, then builds an array by combining the outer keys array_keys( $data ) and the inner column value array_column( $data, $column ) with array_combine() which combines two arrays of keys and an array of value to make each row's final array structure keyed by column name.
This is absolutely reliant on each multidimensional array having the same count of elements. As such this is not suitable for forms with checkbox inputs in them. At which point I would suggest using name="row[0][ColumnName]" as your name attribute and negating the need for this array processing.
http://php.net/manual/en/function.array-column.php
http://php.net/manual/en/function.array-combine.php
http://php.net/manual/en/function.array-keys.php
$data = array(
'Column-1'=>array('Row-1a','Row-2a','Row-3a'),
'Column-2'=>array('Row-1b','Row-2b','Row-3b'),
'Column-3'=>array('Row-1c','Row-2c','Row-3c')
);
$array = array();
foreach( array_keys( current( $data ) ) as $column )
{
$array[] = array_combine( array_keys( $data ), array_column( $data, $column ) );
}
print_r( $array );
Produces
Array
(
[0] => Array
(
[Column-1] => Row-1a
[Column-2] => Row-1b
[Column-3] => Row-1c
)
[1] => Array
(
[Column-1] => Row-2a
[Column-2] => Row-2b
[Column-3] => Row-2c
)
[2] => Array
(
[Column-1] => Row-3a
[Column-2] => Row-3b
[Column-3] => Row-3c
)
)

Answer 2

If you know that the element keys in all 4 of those post variables will always correlate to one timeslot element, then I think this will work for you:
foreach ($_POST['dateSlot'] as $key => $value) {
$timeslots[$key] = [
'date_slot' => $_POST['dateSlot'][$key],
'time_start' => $_POST['timeStart'][$key],
'time_end' => $_POST['timeEnd'][$key],
'event_quota' => $_POST['quota'][$key],
];
}
print_r($timeslots);

Answer 3

$dateSlot = $_POST['dateSlot']
$timeStart = $_POST['timeStart']
$timeEnd = $_POST['timeEnd']
$quota = $_POST['quota']
$all = array();
foreach($dateSlot as $key => $date) {
$all[] = array(
"data_slot" => $dateSlot[$key],
"time_start" => $timeStart[$key],
"time_end" => $timeEnd[$key],
"quota" => $quota[$key]
)
}

Answer 4

Input
$array = array(
'dateSlot' => array('2018-04-05','2018-04-05','2018-04-05'),
'timeStart' => array('11:06 AM','10:06 AM','9:06 AM'),
'timeEnd' => array('11:06 AM','9:06 AM','7:06 AM'),
'quota' => array(12,10,10)
);
Solution
$new = array();
for($i=0;$i<count($array['dateSlot']);$i++){
$new[] = array(
'dateSlot' => $array['dateSlot'][$i],
'timeStart' => $array['timeStart'][$i],
'timeEnd' => $array['timeEnd'][$i],
'event_quota' => $array['quota'][$i],
);
}
echo "<pre>";print_r($new);
Output
Array
(
[0] => Array
(
[dateSlot] => 2018-04-05
[timeStart] => 11:06 AM
[timeEnd] => 11:06 AM
[event_quota] => 12
)
[1] => Array
(
[dateSlot] => 2018-04-05
[timeStart] => 10:06 AM
[timeEnd] => 9:06 AM
[event_quota] => 10
)
[2] => Array
(
[dateSlot] => 2018-04-05
[timeStart] => 9:06 AM
[timeEnd] => 7:06 AM
[event_quota] => 10
)
)