Webservice Webclient with Mysqli

1) Example Get Data
server.php

<?php
require_once "../lib/nusoap.php";
$server = new soap_server();
$server->configureWSDL("mi primer ws","urn:mundopccmb");

if(!isset($HTTP_RAW_POST_DATA)){
    $HTTP_RAW_POST_DATA = file_get_contents("php://input");
}

function dataMahasiswa($id){
    $conn = mysqli_connect("localhost","root","","ws");
    $vehiculos = $conn->query("SELECT nim,nama,alamat FROM mahasiswa ");
    $ArrVehiculos = [];
    while ($vehiculo = mysqli_fetch_array($vehiculos,MYSQLI_ASSOC)) {
        $ArrVehiculos[] = $vehiculo ;
    }
    return json_encode($ArrVehiculos);
}

$server->register("dataMahasiswa",array("id"=>"xsd:int"),
                                    array("return"=>"xsd:string"),
                                    "urn:mundopccmb",
                                    "urn:mundopccmb#dataMahasiswa",
                                    "rpc",
                                    "encoded",
                                    "Carga todos los vehículos"
                  );

$server->service($HTTP_RAW_POST_DATA);

client.php:

<?php

require_once "../lib/nusoap.php";

$client = new nusoap_client("http://localhost/051001/mysqli/server.php?wsdl");
$vehiculos = $client->call("dataMahasiswa",array("id"=>10));
$vehiculos = json_decode($vehiculos);

echo "<table>";
foreach ($vehiculos as $vehiculo) {
    echo     "<td>".$vehiculo->nim."</td>
             <td> ".$vehiculo->nama."</td>
             <td>".$vehiculo->alamat." "."</td>";
}
echo "</table>";

2) Example Input Data

server_input.php

<?php
require_once "../lib/nusoap.php";
$server = new soap_server();
$server->configureWSDL("mi primer ws","urn:mundopccmb");

if(!isset($HTTP_RAW_POST_DATA)){
    $HTTP_RAW_POST_DATA = file_get_contents("php://input");
}

function insertMahasiswa($nim,$nama,$alamat){
    $conn = mysqli_connect("localhost","root","","ws");
    $sql = "INSERT INTO `mahasiswa` (`nim`, `nama`, `alamat`) VALUES ('$nim', '$nama', '$alamat')";
/*     $vehiculos = $conn->query($sql); */
    $vehiculos=mysqli_query($conn, $sql);
        if($$vehiculos==true){
            return "Employee inserted";
        }else{
            return "data not inserted";
        }

}

$server->register("insertMahasiswa",
                                    array("nim"=>"xsd:string", "nama"=>"xsd:string", "alamat"=>"xsd:string"),
                                    array("return"=>"xsd:string"),
                                    "urn:mundopccmb",
                                    "urn:mundopccmb#insertMahasiswa",
                                    "rpc",
                                    "encoded",
                                    "Carga todos los vehículos"
                  );

$server->service($HTTP_RAW_POST_DATA);

client_input.php

<?php
require_once "../lib/nusoap.php";
$client = new nusoap_client("http://localhost/051001/mysqli/server_input.php?wsdl");
?>
<form method="POST">
Nomor Mahasiswa :<input name='nim' required />
Nama Mahasiswa  :<input name='nama' required />
Alamat Asal     :<input name='alamat' required />
<input type='submit' value='simpan'/>

<?php

if(isset($_POST['nim']) and isset ($_POST['nama']) and isset ($_POST['alamat']) ){
$nim = $_POST['nim'];
$nama =$_POST['nama'];
$alamat = $_POST['alamat'];
//bisa and isset     */
$vehiculos = $client->call("insertMahasiswa",array("nim"=>"$nim","nama"=>"$nama","alamat"=>"$alamat"));

}

?>