ohctech_p8/delete_diagnosis_chronic_mapping.php

<?php
include('includes/config/config.php');
$query = "";
if (!empty($_REQUEST['flex_id'])) {
    $query = " delete from diagnosis_chronic_mapping where id = '" . $_REQUEST['flex_id'] . " '   ";

    if (!$result = @mysqli_query($conn, $query)) {

        die(mysqli_error($conn));
        echo json_encode("FAILURE");
    } else {
        echo json_encode("SUCCESS");
    }
}