Pass variables through include (another php file) in php - php

Question

I'm working on a php web application for a website, and I would like to pass some variables from one php file to another. I have tried the old fashion way with the include file but was not successful. I also tried to set the variables in global scope but still not working. The code in first.php file is:
function rc_getAvailableVehicles($pickup_timestamp, $return_timestamp, $vehicle_classes=array()) {
global
$wpdb;
$rc_currency = RC_Registry::get('rc_currency');
$where_classes = "";
if ($vehicle_classes) {
foreach($vehicle_classes as $vehicle_class) {
$where_classes[] = " v.class = '". $wpdb->escape($vehicle_class) ."'";
}
$where_classes = "AND (".implode(' OR ', $where_classes).") ";
}
$sql = "SELECT *
FROM ".$wpdb->rc_vehicles." v
WHERE v.quantity > (SELECT COUNT(*) FROM ".$wpdb->rc_bookings." b WHERE b.vehicle_id = v.vehicle_id AND ((UNIX_TIMESTAMP(b.pickup_date) >= '". (int)$pickup_timestamp ."' AND UNIX_TIMESTAMP(b.pickup_date) < '". (int)$return_timestamp ."') || (UNIX_TIMESTAMP(b.pickup_date) < '". (int)$pickup_timestamp ."' AND UNIX_TIMESTAMP(b.return_date) >= '". (int)$pickup_timestamp ."')) AND (b.status != 'new' AND b.status != 'canceled') AND b.trash = '0') ".$where_classes."AND v.status = '1' AND v.archive = '0'
ORDER BY v.rent ASC";
$results = $wpdb->get_results($sql,ARRAY_A);
$vehicles = array();
$rental_days = ceil(($return_timestamp-$pickup_timestamp)/91800);
$xfee = get_field('another_location_fee');
$xfee2 = get_field('return_to_another_location_fee_2');
if ($results) {
foreach ($results as $result) {
if ($result['image'] && file_exists(RC_UPLOADS_DIR . "vehicle_" . $result['image'])) {
$image = RC_UPLOADS_URL . 'vehicle_' . $result['image'];
$image_thumb = RC_UPLOADS_URL . 'cache/' . rc_image_resize(RC_UPLOADS_DIR . "vehicle_" . $result['image'], 220, 160);
} else {
$image = '';
$image_thumb = '';
}
$result['description'] = do_shortcode($result['description']);
$description = html_entity_decode($result['description'], ENT_QUOTES, 'UTF-8');
global $GeneralPrice, $discount_price, $rent1, $rent5;
include_once ('file2.php');
//$GeneralPrice = $result['rent'];
$rent1 = $vehicle_meta['rent1'];
$rent2 = $vehicle_meta['rent2'];
$rent3 = $vehicle_meta['rent3'];
$rent4 = $vehicle_meta['rent4'];
$rent5 = $vehicle_meta['rent5'];
$rent6 = $vehicle_meta['rent6'];
$rent7 = $vehicle_meta['rent7'];
$rent8 = $vehicle_meta['rent8'];
$rent9 = $vehicle_meta['rent9'];
$rent10 = $vehicle_meta['rent10'];
$rent11 = $vehicle_meta['rent11'];
$rent12 = $vehicle_meta['rent12'];
$rent13 = $vehicle_meta['rent13'];
$rent14 = $vehicle_meta['rent14'];
$rent15 = $vehicle_meta['rent15'];
$rent16 = $vehicle_meta['rent16'];
$rent17 = $vehicle_meta['rent17'];
$rent18 = $vehicle_meta['rent18'];
$rent19 = $vehicle_meta['rent19'];
$rent20 = $vehicle_meta['rent20'];
$rent21 = $vehicle_meta['rent21'];
$rent22 = $vehicle_meta['rent22'];
$rent23 = $vehicle_meta['rent23'];
$rent24 = $vehicle_meta['rent24'];
$rent25 = $vehicle_meta['rent25'];
$rent26 = $vehicle_meta['rent26'];
$rent27 = $vehicle_meta['rent27'];
$rent28 = $vehicle_meta['rent28'];
$rent29 = $vehicle_meta['rent29'];
$rent30 = $vehicle_meta['rent30'];
$rent31 = $vehicle_meta['rent31'];
$rent32 = $vehicle_meta['rent32'];
$rent33 = $vehicle_meta['rent33'];
$rent34 = $vehicle_meta['rent34'];
$rent35 = $vehicle_meta['rent35'];
$rent36 = $vehicle_meta['rent36'];
$vehicle_meta = rc_getVehicleMeta($result['vehicle_id']);
$vehicles[$result['vehicle_id']] = array(
'vehicle_id' => $result['vehicle_id'],
'title' => $result['manufacturer']." ".$result['series'],
'manufacturer' => $result['manufacturer'],
'series' => $result['series'],
'year' => $result['year'],
'class' => $result['class'],
'image' => $image,
'image_thumb' => $image_thumb,
'description' => $description,
'seats' => $vehicle_meta['seats'],
'doors' => $vehicle_meta['doors'],
'baggages' => $vehicle_meta['baggages'],
'conditioning' => $vehicle_meta['conditioning'],
'transmission' => $vehicle_meta['transmission'],
'rent1' => $vehicle_meta['rent1'],
'rent2' => $vehicle_meta['rent2'],
'rent3' => $vehicle_meta['rent3'],
'rent4' => $vehicle_meta['rent4'],
'rent5' => $vehicle_meta['rent5'],
'rent6' => $vehicle_meta['rent6'],
'rent7' => $vehicle_meta['rent7'],
'rent8' => $vehicle_meta['rent8'],
'rent9' => $vehicle_meta['rent9'],
'rent10' => $vehicle_meta['rent10'],
'rent11' => $vehicle_meta['rent11'],
'rent12' => $vehicle_meta['rent12'],
'rent13' => $vehicle_meta['rent13'],
'rent14' => $vehicle_meta['rent14'],
'rent15' => $vehicle_meta['rent15'],
'rent16' => $vehicle_meta['rent16'],
'rent17' => $vehicle_meta['rent17'],
'rent18' => $vehicle_meta['rent18'],
'rent19' => $vehicle_meta['rent19'],
'rent20' => $vehicle_meta['rent20'],
'rent21' => $vehicle_meta['rent21'],
'rent22' => $vehicle_meta['rent22'],
'rent23' => $vehicle_meta['rent23'],
'rent24' => $vehicle_meta['rent24'],
'rent25' => $vehicle_meta['rent25'],
'rent26' => $vehicle_meta['rent26'],
'rent27' => $vehicle_meta['rent27'],
'rent28' => $vehicle_meta['rent28'],
'rent29' => $vehicle_meta['rent29'],
'rent30' => $vehicle_meta['rent30'],
'rent31' => $vehicle_meta['rent31'],
'rent32' => $vehicle_meta['rent32'],
'rent33' => $vehicle_meta['rent33'],
'rent34' => $vehicle_meta['rent34'],
'rent35' => $vehicle_meta['rent35'],
'rent36' => $vehicle_meta['rent36'],
'total_price' => $rc_currency->format((($rental_days*$GeneralPrice)-(($rental_days*$GeneralPrice) * ($discount_price)/100)+ $utime)),
'total_price_return_fee' => $rc_currency->format((($rental_days*$result['rent']) - ($rental_days*$result['rent']) * ($discount_price)/100)+ $xfee),
'total_price_return_fee2' => $rc_currency->format((($rental_days*$result['rent']) - ($rental_days*$result['rent'])*($discount_price)/100)+ $xfee2),
'daily_price' => $rc_currency->format((($GeneralPrice)-($GeneralPrice)*($discount_price)/100)+ ($utime / $rental_days)),
'daily_price_return_fee' => $rc_currency->format(($result['rent']-($result['rent'])* ($discount_price)/100)+ ($xfee / $rental_days)),
'daily_price_return_fee2' => $rc_currency->format(($result['rent']-($result['rent'])*($discount_price)/100) + ($xfee2 / $rental_days))
);
}
}
return $vehicles;
}
and I want to echo all the $rent variables in file2.php
I have tried the
echo $rent; without success!

Answer 1

You have problems with the order of the code
$vehicle_meta = rc_getVehicleMeta($result['vehicle_id']);
Should be BEFORE you populate rent variables, and
include_once ('file2.php');
Should be AFTER you populated rent variables.

Answer 2

You need to call a function in file1.php that exists in file2.php
ex. in file1.php you could call the function return_rent
return_rent($rent);
in file2 then you make the function
function return_rent($var){
echo $rent;
}

Answer 3

$pass = "anything";
include_once ('file2.php');
From file2.php you can access $pass variable.