api-fetch-all.php

<?php
//protip==use GET method in postman api

header("content-type: application/json"); //return json data

header("Access-Control-Allow-Origin: *");   //koi bhi website aur mobile app access kr skti hai

include "config.php";

$sql="SELECT * FROM students";
$result=mysqli_query($conn,$sql) or die("SQL Query Failed");

if(mysqli_num_rows($result) > 0){
  $output=mysqli_fetch_all($result,MYSQLI_ASSOC);
  echo json_encode($output);
}else{
  echo json_encode(array("message"=> "No Records Found","status"=> FALSE));
}
?>