<?php
$servername = "localhost";
$username = "root";
$password = "";
$database = "life_saver";
//creating a new connection object using mysqli
$conn = new mysqli($servername, $username, $password, $database);
//an array to display response
$response = array();
//displaying the response in json structure
# Get JSON as a string
$json_str = file_get_contents('php://input');
# Get as an object
$json_obj = json_decode($json_str);
if(isTheseParametersAvailable
(array('id','role_id','Designation','Department','Father_name','Section','CNIC','ICE_No','Postal_Address')))
{
 //getting the values
 $id = $json_obj->id;
 $role_id = $json_obj->role_id;
 $Designation = $json_obj->Designation;
 $Department = $json_obj->Department;
 $Father_name = $json_obj->Father_name;
 $Section = $json_obj->Section;
 $CNIC = $json_obj->CNIC;
 $ICE_No = $json_obj->ICE_No;
 $Postal_Address = $json_obj->Postal_Address;
 //if user is new creating an insert query
 $stmt = $conn->prepare("UPDATE users ( role_id, Designation,Department, Father_name,Section,CNIC,ICE_No,Postal_Address ) VALUES (?, ?, ?, ?,?,?,?,? ) WHERE id=? ");

$stmt->bind_param("ssssssss", $role_id, $Designation,$Department, $Father_name,$Section,$CNIC,$ICE_No,$Postal_Address);
 //if the user is successfully added to the database
 if($stmt->execute()){
 //fetching the user back
 $stmt = $conn->prepare("SELECT id, id, role_Id, Designation,Department, Father_name,Section,CNIC,ICE_No,Postal_Address FROM users WHERE id = ?");
 $stmt->bind_param("s",$id);
 $stmt->execute();
 $stmt->bind_result($userid, $id, $role_id, $Designation,$Department, $Father_name,$Section,$CNIC,$ICE_No,$Postal_Address);
 $stmt->fetch();
 $user = array(
 'id'=>$id,
 'role_id'=>$role_id,
 'Designation'=>$Designation,
 'Department'=>$Department,
 'Father_name'=>$Father_name,
 'Section'=>$Section,
 'CNIC'=>$CNIC,
 'ICE_No'=>$ICE_No,
 'Postal_Address'=>$Postal_Address
);
$stmt->close();
  //adding the user data in response
 $response['message'] = 'User Updated successfully';
 $response['user'] = $user;
 }
 }
  else{
$response['message'] = 'required parameters are not available';
 }
echo json_encode($response);
 //function validating all the paramters are available
 //we will pass the required parameters to this function
 function isTheseParametersAvailable($params){
 # Get JSON as a string
$json_str = file_get_contents('php://input');
# Get as an object
$json_obj = json_decode($json_str);
 //traversing through all the parameters
 foreach($params as $param){
 //if the paramter is not available
 if(!$json_obj->$param){
     //return false
 return false;
 }
 }
 //return true if every param is available
 return true;
 }