Extending the library's capabilities by adding the ArgumentObject class for describing input objects.

composer.json

@@ -31,7 +31,7 @@
  "require": {
  "php": "^7.1 || ^8.0",
  "ext-json": "*",
- "psr/http-message": "^1.0",
+ "psr/http-message": "^1.0 || ^2.0",
  "psr/http-client": "^1.0",
  "guzzlehttp/guzzle": "^6.3|^7.0.1"
  },

examples/query_example.php

@@ -2,6 +2,7 @@
 
 require_once __DIR__ . '/../vendor/autoload.php';
 
+use GraphQL\ArgumentObject;
 use GraphQL\Client;
 use GraphQL\Exception\QueryError;
 use GraphQL\Query;
@@ -15,7 +16,13 @@
 
 // Create the GraphQL query
 $gql = (new Query('pokemon'))
- ->setArguments(['name' => 'Pikachu'])
+ ->setArguments([
+ 'name' => 'Pikachu',
+ 'age' => new ArgumentObject([
+ 'min' => 7,
+ 'max' => 20
+ ]),
+ ])
  ->setSelectionSet(
  [
  'id',

src/ArgumentObject.php

@@ -0,0 +1,39 @@
+<?php
+
+namespace GraphQL;
+
+use GraphQL\Util\StringLiteralFormatter;
+
+class ArgumentObject
+{
+
+ /**
+ * @var array
+ */
+ private $input;
+
+ /**
+ * @param array $input
+ */
+ public function __construct(array $input)
+ {
+ $this->input = $input;
+ }
+
+
+ public function __toString(): string
+ {
+ $result = [];
+ foreach ($this->input as $key => $value) {
+ if (is_scalar($value) || $value === null) {
+ $value = StringLiteralFormatter::formatValueForRHS($value);
+ } elseif (is_array($value)) {
+ $value = StringLiteralFormatter::formatArrayForGQLQuery($value);
+ }
+
+ $result[] = "${key}: ${value}";
+ }
+
+ return '{' . implode(', ', $result) . '}';
+ }
+}