guzzle post files with same name field

dump.pcap

	POST /post.php HTTP/1.1
	Host: example.com
	User-Agent: GuzzleHttp/6.3.2 curl/7.43.0 PHP/7.1.14
	Content-Type: multipart/form-data; boundary=dbe860af679d39ed8d83b39cb2285a232429869c
	Content-Length: 372
	
	--dbe860af679d39ed8d83b39cb2285a232429869c
	Content-Disposition: form-data; name="text"; filename="t1.txt"
	Content-Length: 6
	Content-Type: text/plain
	
	file1
	
	--dbe860af679d39ed8d83b39cb2285a232429869c
	Content-Disposition: form-data; name="text"; filename="t2.txt"
	Content-Length: 6
	Content-Type: text/plain
	
	text2
	
	--dbe860af679d39ed8d83b39cb2285a232429869c--

send.php

<?php

require_once 'vendor/autoload.php';

$client = new GuzzleHttp\Client();

$response = $client->request('POST', 'http://example.com/post.php',
    [
        'multipart' => [
            [
                'name' => 'text',
                'contents' => fopen('t1.txt', 'r'),
            ],
            [
                'name' => 'text',
                'contents' => fopen('t2.txt', 'r'),
            ],
        ],
    ]
);

var_dump($response->getBody()->getContents());