GraphQL Client PHP

How to install

Install by sources

You can install the project with ssh git clone git@github.com:Ciloe/graphql-client-php.git or or by https git clone https://github.com/Ciloe/graphql-client-php.git

Install by composer

To add at your project, just use this command line :

composer require ciloe/graphql-client-php

Configuration

At the first time, you need to configure the API information (host, uri, token).

<?php

require_once './vendor/autoload.php';

$model = new \GraphQLClientPhp\Model\ApiModel('https://api.github.com', '/graphql', 'MyToken');

Now you can use the client. See following examples

Basic used (see demo Folder)

Before everything, declare the bridge, this class will calling your API. You must declare your client too.

<?php

// Some code

$bridge = new \GraphQLClientPhp\Bridge\BasicBridge($model);
$client = new \GraphQLClientPhp\Client\BasicClient(
    $bridge, 
    new GraphQLClientPhp\Parser\QueryBasicParser()
);

Using factory

To create faster a client, you can use the factory function like this.

<?php

require_once './vendor/autoload.php';

$client = \GraphQLClientPhp\Client\BasicClient::factory(
    'https://api.github.com',
    'graphql',
    'MyToken'
);

Now you can use the client to call the api with a simple query :

<?php

// Some code

$results = $client->query('query test {user {name}}');

See all functions available in the client here.

Advanced Use

Use queries with variables

Now you can use queries by name.

<?php

// Some code

$bridge = new \GraphQLClientPhp\Bridge\BasicBridge($model);
$client = new \GraphQLClientPhp\Client\BasicClient(
    $bridge, 
    new GraphQLClientPhp\Parser\QueryBasicParser()
);

$results = $client
    ->addVariable('variable', true)
    ->query('query test ($variable: Boolean!) {user @include (if: $variable) {name}}');

Use queries cached

<?php

// Some code

$pool = new \Symfony\Component\Cache\Adapter\FilesystemAdapter();
$fileCache = $PATH_TO_CACHE_DIR . 'cache.php';
$queries = $PATH_TO_GRAPHQL_QUERIES . 'queries';
$fragments = $PATH_TO_GRAPHQL_FRAGMENTS . 'fragments';
$adapter = new \Symfony\Component\Cache\Adapter\PhpArrayAdapter($fileCache, $pool);

$service = new \GraphQLClientPhp\Cache\BasicCache(
    $adapter,
    new \GraphQLClientPhp\Parser\QueryBasicParser(),
    ['queries' => $queries, 'fragments' => $fragments]
);
$service->warmUp();

This example will generate queries stored in $queries folder with fragment declared in $fragment folder. The cache is a single php file generated with the array adapter. The cache keys are the name of file. It must be unique.

You can use the factory to create multiple cache object :

<?php

// Some code

$DS = DIRECTORY_SEPARATOR;
$fileCache = __DIR__ . $DS . 'Resources' . $DS . 'cache' . $DS . 'cache.php';
$queries = __DIR__ . $DS . 'Resources' . $DS . 'graph' . $DS . 'queries';
$fragments = __DIR__ . $DS . 'Resources' . $DS . 'graph' . $DS . 'fragments';
$queryParser = new \GraphQLClientPhp\Parser\QueryBasicQueryParser();

$cache = \GraphQLClientPhp\Cache\BasicCache::factory(
    $fileCache,
    $queries,
    $fragments,
    $queryParser
);

Now you can use queries by name.

<?php

// Some code

$query = $adapter->getItem('myQueryFile');
$fragments = $adapter->getItem(\GraphQLClientPhp\Cache\CacheInterface::CACHED_FRAGMENT_KEY);
$client = new \GraphQLClientPhp\Client\BasicClient(
    $bridge, 
    new GraphQLClientPhp\Parser\QueryBasicParser(),
    $fragments
);

$result = $client->query($query);

Get array results from async query (use promise)

<?php

// Some code

// In your PHP execution, you can stored more than one query.
$client
->setName('myFirstQuery')
->setVariables(['number' => 5])
->addQuery(
    'query ($number:Int!) {
      viewer {
        name
         repositories(last: $number) {
           nodes {
             name
           }
         }
       }
    }'
);

$client
->setName('mySecondQuery')
->addQuery(
    'query {
      viewer {
        name
       }
    }'
);

$results = $client->sendQueries(true); // Use parameter $async to use or not promises.