ohctech_p8/select_bill.php

<?php
include('includes/config/config.php');
$bill_id = $_REQUEST['bill_id'];


$query = "select a.*,b.product_list,b.rate_per_unit,b.qty,b.total_before_discount,b.discount_percentage,b.discount_amount,b.total_after_discount,b.tax_code1,b.tax_rate1,b.tax_code2,b.tax_rate2,b.total_tax,b.total_amount from bill_master a left join bill_details b on b.bill_id=a.bill_id where a.bill_id = '".$bill_id."' ";
  if (!$result = @mysqli_query($conn,$query)) {
            die(mysqli_error ($conn));
        }
	$data = array();
    $data_all=array();
    $i=1;
	if(mysqli_num_rows($result) > 0) {
        while ($row = mysqli_fetch_assoc($result)) {
            $data[$i] = $row;
            
            array_push($data_all,$data[$i]);  
             $i++;  
        }

    
    }
	 else
    {
        $data['status'] = 200;
        $data['message'] = "Data not found!";
    }
$data_all[0]['counter']=$i-1;
 echo json_encode($data_all);
?>