<?php include('includes/config/config.php'); include('includes/functions.php'); include('log_entry.php'); error_reporting(E_ALL & ~E_NOTICE & ~E_DEPRECATED & ~E_WARNING); $data = []; $sql = "select * from medicine_frequency where is_default='1'"; $result = mysqli_query($conn, $sql); $row = mysqli_fetch_assoc($result); $data = $row['frequency_id']; error_log("query " . $data); echo json_encode($data);