Installation and using elasticsearch php client on

I'm downloaded the elasticsearch-5.1.1.zip from the https://www.elastic.co/downloads/elasticsearch

Then download the Elastica A PHP client for elasticsearch via composer with this command

composer require ruflin/elastica:dev-master

Now i want to open and make a test. When i run this command

bin\elasticsearch.bat

i get this error: The syntax of the command is incorrect.

On the other side if i try to use Elastica A PHP client i get some errors like this:

Fatal error: Uncaught Elastica\Exception\Connection\HttpException: Couldn't connect to host, Elasticsearch down? in E:\xampp\htdocs\el\vendor\ruflin\elastica\lib\Elastica\Transport\Http.php:180 Stack trace: #0 E:\xampp\htdocs\el\vendor\ruflin\elastica\lib\Elastica\Request.php(171): Elastica\Transport\Http->exec(Object(Elastica\Request), Array) #1 E:\xampp\htdocs\el\vendor\ruflin\elastica\lib\Elastica\Client.php(662): Elastica\Request->send() #2 E:\xampp\htdocs\el\vendor\ruflin\elastica\lib\Elastica\Client.php(673): Elastica\Client->request('twitter/', 'DELETE', Array, Array) #3 E:\xampp\htdocs\el\vendor\ruflin\elastica\lib\Elastica\Index.php(531): Elastica\Client->request('twitter/', 'DELETE', Array, Array) #4 E:\xampp\htdocs\el\vendor\ruflin\elastica\lib\Elastica\Index.php(165): Elastica\Index->request('twitter/', 'DELETE') #5 E:\xampp\htdocs\el\vendor\ruflin\elastica\lib\Elastica\Index.php(258): Elastica\Index->delete() #6 E:\xampp\htdocs\el\index.php(40): Elastica\Index->create(Array, true) #7 {main} thrown in E:\xampp\htdocs\el\vendor\ruflin\elastica\lib\Elastica\Transport\Http.php on line 180

My question is How can i work with elasticsearch-5.1? Where am i do wrong?

Regards.

https://www.elastic.co/guide/en/elasticsearch/reference/master/windows.html#windows

At the note said, you're missing JDK8 or later