Grepper PHP client

The Grepper PHP library provides convenient access to the Grepper API from applications written in the PHP language.

Requirements

PHP 5.6.0 and later.

Composer

You can install the php client via Composer. Run the following command:

composer require grepper/grepper-php

To use the bindings, use Composer's autoload:

require_once 'vendor/autoload.php';

Manual Installation

If you do not wish to use Composer, you can download the latest release. Then, to use the php client, include the init.php file.

require_once '/path/to/grepper-php/init.php';

Dependencies

The bindings require the following extensions in order to work properly:

• curl, although you can use your own non-cURL client if you prefer
• json

If you use Composer, these dependencies should be handled automatically. If you install manually, you'll want to make sure that these extensions are available.

Getting Started

Simple usage looks like:

$grepper = new \Grepper\GrepperClient('your_api_key_here');
$answers = $grepper->answers->search([
    'query' => 'javascript loop array backwords'
]);
print_r($answers);

Documentation

See the PHP API docs.

Custom Request Timeouts

To modify request timeouts (connect or total, in seconds) you'll need to tell the API client to use a CurlClient other than its default. You'll set the timeouts in that CurlClient.

// set up your tweaked Curl client
$curl = new \Grepper\HttpClient\CurlClient();
$curl->setTimeout(10); // default is \Grepper\HttpClient\CurlClient::DEFAULT_TIMEOUT
$curl->setConnectTimeout(5); // default is \Grepper\HttpClient\CurlClient::DEFAULT_CONNECT_TIMEOUT

echo $curl->getTimeout(); // 10
echo $curl->getConnectTimeout(); // 5

// tell Grepper to use the tweaked client
\Grepper\ApiRequestor::setHttpClient($curl);

// use the Grepper API client as you normally would

Custom cURL Options (e.g. proxies)

Need to set a proxy for your requests? Pass in the requisite CURLOPT_* array to the CurlClient constructor, using the same syntax as curl_stopt_array(). This will set the default cURL options for each HTTP request made by the SDK, though many more common options (e.g. timeouts; see above on how to set those) will be overridden by the client even if set here.

// set up your tweaked Curl client
$curl = new \Grepper\HttpClient\CurlClient([CURLOPT_PROXY => 'proxy.local:80']);
// tell Grepper to use the tweaked client
\Grepper\ApiRequestor::setHttpClient($curl);

Alternately, a callable can be passed to the CurlClient constructor that returns the above array based on request inputs. See testDefaultOptions() in tests/CurlClientTest.php for an example of this behavior. Note that the callable is called at the beginning of every API request, before the request is sent.

Configuring a Logger

The library does minimal logging, but it can be configured with a [PSR-3 compatible logger][psr3] so that messages end up there instead of error_log:

\Grepper\Grepper::setLogger($logger);

Accessing response data

You can access the data from the last API response on any object via getLastResponse().

$answers = $grepper->answers->search([
    'query' => 'js loop',
]);
echo $answers->getLastResponse()->headers['Request-Id'];

Configuring CA Bundles

By default, the library will use its own internal bundle of known CA certificates, but it's possible to configure your own:

\Grepper\Grepper::setCABundlePath("path/to/ca/bundle");

Configuring Automatic Retries

The library can be configured to automatically retry requests that fail due to an intermittent network problem:

\Grepper\Grepper::setMaxNetworkRetries(2);