sending array via query string in guzzle - php

Question

Guzzle client creates by default from this code
$client->get('https://example.com/{?a}', array('a' => array('c','d')));
this url
https://example.com/?a=c,d
What is the best practice to send array in query string in RESTful application? The question is, how can I determine on the server side whether c,d is a string or an array? Isn't it better to send arrays using square brackets, e.g. a[]=c&a[]=d? How can I set Guzzle to use square brackets? Or it is better to use JSON encoded variables? On the server side I'm using Tonic.

Answer 1

Working Solution:
$vars = array('state[]' => array('Assigned','New'), 'per_page' => $perPage, 'page' => $pageNumber);
$query = http_build_query($vars, null, '&');
$string = preg_replace('/%5B(?:[0-9]|[1-9][0-9]+)%5D=/', '=', $query); // state[]=Assigned&state[]=New
$client = new Client([follow instruction to initialize your client ....]);
$response = $client->request('GET', $uri, ['query' => $string]);
Now you have same name parameters in your request.
Dung.
Source: http_build_query with same name parameters

Answer 2

It seems the answer is here.
I wanted to do something like ?status[]=first&status[]=second
You can do this in Guzzle like shown in the link above:
$client = new Client('http://test.com/api');
$request = $client->get('/resource');
$query = $request->getQuery();
$query->set('status', array('first', 'second'));

Answer 3

Guzzle has a helper function you can use called build_query(). This uses PHP's http_build_query().
Here's an example of how to use it:
$params = [
'a[]' => [
'c',
'd'
],
'page' => 1
];
$query = \GuzzleHttp\Psr7\build_query($params);
$response = $client->request('GET', 'https://example.com/', [
'query' => $query
]);

Answer 4

I'm not 100% sure this quite answers the question. But I found the question while looking for how to construct complex queries using Guzzle and none of the answers here were the solution I ended up using. I'm adding it here in case it's ever useful for any other devs.
Using Guzzle 6, you can do this type of request:
$endPoint = "https://example.com";
$queryParams = [
'a' => [
[
"b" => "c"
]
]
];
$options = [
'debug' => true, // so you can see what the request looks like
'query' => $queryParams
];
$client->request('GET', $endPoint, $options);
As a real world example, query params like this:
$queryParams = [
'filters' => [
[
"field" => "status",
"value" => "open",
"operator" => "equal"
],
[
"field" => "total",
"operator" => "greater_than",
"value" => 50
],
],
'limit' => 500,
'start' => 7
];
produce a url like this:
https://example.com?filters=[{"field":"status","operator":"equal","value":"open"},{"field":"total","operator":"less_than","value":50}]&limit=500&start=7
The point being that the query key of the $options array, seems very powerful. I'd recommend having a play with that before going down the route of writing complex regular expressions.

Answer 5

$query = array('x' => array(
'a',
'b',
'c'
));
$query_string = http_build_query($query, null, '&'); //build query string
$query_string = preg_replace('/%5B(?:[0-9]|[1-9][0-9]+)%5D=/', '[]=', $query_string); //x[]=a&x[]=b
$response = $guzzle->client->get($path, array('query' => $query_string)); //Make guzzle request
return json_decode($response->getBody()->getContents()); //Return JSON decoded array
This is how you can process x with array of values in guzzle, tested with version 6 or later