Sample PHP code to programmatically check SOAP connection in Magento 2

I tried the below code though I am not sure whether these are the required set of scripts, but it didn't work and gives

SOAP-ERROR: Parsing WSDL: Couldn't load from : Start tag expected, '<' not found

$wsdlUrl = 'http://localhost/magento20_0407/soap/default?wsdl_list=1';
$apiUser = 'testUser'; 
$apiKey = 'admin123';
$token = 'xioxnuuebn7tlh8ytu7781t14w7ftwmp';

$opts = array('http' => array('method' => "GET", 'header' => "Accept-language: en\r\nConnection: close\r\n")); 
$context = stream_context_create($opts); 
stream_context_set_option($context, "http", "protocol_version", 1.1); 
fpassthru(fopen($wsdlUrl, 'r', false, $context)); 
$opts = array('http'=>array('header' => 'Authorization: Bearer '.$token));
$serviceArgs = array("id"=>1);

try{
    $context = stream_context_create($opts);
    $soapClient = new SoapClient($wsdlUrl, array('version' => SOAP_1_2, 'context' => $context));
    $soapResponse = $soapClient->customerCustomerAccountServiceV1($serviceArgs);
}catch(Exception $e){
    $e->getMessage();
}
    var_dump($soapResponse);exit;

Can anyone share the code to make SOAP connection in Magento2.x

In Magento1.x the below code works fine to connect SOAP

$apiUrl = 'http://localhost/magento_28_03/index.php/api/soap?wsdl';
$apiUser = 'testUser'; 
$apiKey = 'admin123';

ini_set("soap.wsdl_cache_enabled", "0");
try{
    $client = new SoapClient($apiUrl, array('cache_wsdl' => WSDL_CACHE_NONE));
} catch (SoapFault  $e) {
    echo 'Error in Soap Connection : '.$e->getMessage();
}
try {
    $session = $client->login($apiUser, $apiKey);
    if($session) echo 'SOAP Connection Successful.';
    else echo 'SOAP Connection Failed.';

} catch (SoapFault  $e) {
    echo 'Wrong Soap credentials : '.$e->getMessage();
}   

But the above doesn't work for Magento 1. Can anyone say, what changes the above code needs to work fine for Magento 2?

For SOAP API call follow the below

test.php

<?php
$token = 'YOUR_ACCESS_TOKEN';

require('vendor/zendframework/zend-server/src/Client.php');
require('vendor/zendframework/zend-soap/src/Client.php');
require('vendor/zendframework/zend-soap/src/Client/Common.php');



$addArgs = array('num1'=>2, 'num2'=>1);// Get Request
$sumArgs = array('nums'=>array(2,1000));// Post request


//$wsdlUrl = YOUR_BASE_URL."soap?wsdl&services=customerAccountManagementV1,customerCustomerRepositoryV1,alanKentCalculatorWebServiceCalculatorV1";//To declar multiple
$wsdlUrl = YOUR_BASE_URL."soap?wsdl&services=alanKentCalculatorWebServiceCalculatorV1";
try{
    $opts = ['http' => ['header' => "Authorization: Bearer " . $token]];
    $context = stream_context_create($opts);
    
    $soapClient = new \Zend\Soap\Client($wsdlUrl);
    $soapClient->setSoapVersion(SOAP_1_2);
    $soapClient->setStreamContext($context);
}catch(Exception $e){
    echo 'Error1 : '.$e->getMessage();
}

try{
    $soapResponse = $soapClient->alanKentCalculatorWebServiceCalculatorV1Add($addArgs);print_r($soapResponse);
    $soapResponse = $soapClient->alanKentCalculatorWebServiceCalculatorV1Sum($sumArgs);print_r($soapResponse);          
}catch(Exception $e){
    echo 'Error2 : '.$e->getMessage();
}
?>

http://YOUR_BASE_URL/test.php