gozap_api/Admin/Asset/change_asset.php

<?php
include_once "../../include/DB.php";

$AssetID="";
$IsInServiceCenter=0;

if (isset($_POST["AssetID"]) && !empty($_POST["AssetID"])) {
    $AssetID=$_POST["AssetID"];
}
if (isset($_POST["IsInServiceCenter"]) && !empty($_POST["IsInServiceCenter"])) {
    $IsInServiceCenter=$_POST["IsInServiceCenter"];
}

$AssetUpdateSql = "UPDATE asset SET IsInServiceCenter='$IsInServiceCenter' WHERE AssetID='$AssetID'";

$AssetUpdateResult = $conn->query($AssetUpdateSql);
if ($AssetUpdateResult === TRUE) {
    $value = array(
        "AssetID"=>$AssetID,
        "IsInServiceCenter"=>(int)$IsInServiceCenter,
        "Message"=>"Asset data saved successfully",
      );
      // Use json_encode() function
      $json = json_encode($value);
}else {
    http_response_code(404);
    $errorMesage= $conn->error;
    // Declare an array with error message 
    $value = array(
      "Message"=>"Something went wrong",
      "Error"=>$errorMesage
    );
    // Use json_encode() function
    $json = json_encode($value);
}
// Display the output
echo ($json);
$conn->close();