PHP Combining Two Arrays Using array_combine() - php

Question

But I receive 2 errors executing the code below:
Message: Undefined index: rt_default_price
Filename:
controllers/reservations.php Line Number: 24
Message: Illegal offset type
Filename: controllers/reservations.php
Line Number: 24
Line number 24 is...
$combined[] = array($key => $arrVals[$i]);
Controller (reservations.php)
$arrVals['rt_name'] = $this->reservations_model->pop_room_type(); /* This is the 1st Array:
Array
(
[rt_name] => Array
(
[0] => Array
(
[rt_name] => Business
)
[1] => Array
(
[rt_name] => Econ
)
[2] => Array
(
[rt_name] => Luxury
)
[3] => Array
(
[rt_name] => VIP
)
)
)
*/
$arrKeys['rt_default_price'] = $this->reservations_model->pop_room_price(); /* This is the 2nd Array:
Array
(
[rt_default_price] => Array
(
[0] => Array
(
[rt_default_price] => 50000
)
[1] => Array
(
[rt_default_price] => 25000
)
[2] => Array
(
[rt_default_price] => 75000
)
[3] => Array
(
[rt_default_price] => 100000
)
)
)
*/
$combined=array();
foreach ($arrKeys as $i => $key) {
$combined[] = array($key => $arrVals[$i]); // Line 24
}
/*echo "<pre>";
print_r($combined);
echo "</pre>";
Array
(
[0] => Array
(
)
)
*/
$this->load->view('/main/new_reservation', $combined);
View (main/new_reservation.php)
<?php
echo form_dropdown('room_type', $combined);
?>
Model (reservation_model.php)
function pop_room_type() {
$this->db->select('rt_name');
$query=$this->db->get('room_type');
return $query->result_array();
}
function pop_room_price() {
$this->db->select('rt_default_price');
$query=$this->db->get('room_type');
return $query->result_array();
}

Answer 1

I think I understand what you're trying to achieve but please correct me if I'm wrong.
$combined=array('rt_name'=>array());
foreach ($arrKeys['rt_default_price'] as $i => $defaultPrice) {
$combined['rt_name'][$i]=array(reset($defaultPrice)=>reset($arrVals['rt_name'][$i]));
}
Please note that this does depend on the indexes being the same; if that is not always the case, checking should be added to make sure the indexes exist.
The reset function returns the first element in the array.

Answer 2

Change this
$arrVals['rt_name'] = $this->reservations_model->pop_room_type(); /* This is the 1st Array:
to
$arrVals = $this->reservations_model->pop_room_type(); /* This is the 1st Array:
Change this
$arrKeys['rt_default_price'] = $this->reservations_model->pop_room_price(); /* This is the 2nd Array:
to
$arrKeys = $this->reservations_model->pop_room_price(); /* This is the 2nd Array: