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Proof of concept, retrieve publicly-available Facebook page event data.
<?php
/**
* Proof of concept, retrieve publicly-available Facebook page event data.
* Chris Hardie <chris@chrishardie.com>
*
* To use, first add Guzzle as a dependency:
* $ commposer require guzzlehttp/guzzle
*
*/
require 'vendor/autoload.php';
use GuzzleHttp\Client;
define( 'FB_UPCOMING_EVENT_DOC_ID', 2343886202319301 );
$facebook_pages = array(
'50650939390' => array(
'page_name' => 'Richmond Parks Department',
'page_url' => 'https://www.facebook.com/richmondparks/',
'category' => 'outdoor',
),
);
$facebook_base_params = array(
'fb_api_req_friendly_name' => 'PageEventsTabUpcomingEventsCardRendererQuery',
'__req' => '8',
'__user' => '0',
'av' => '0',
'__a' => '1',
'__be' => '1',
'dpr' => '2',
'fb_api_caller_class' => 'RelayModern',
'__pc:PHASED' => 'DEFAULT',
'__comet_req' => 'false',
);
$client = new Client(
[
// Base URI is used with relative requests
'base_uri' => 'https://www.facebook.com',
// You can set any number of default request options.
'timeout' => 2.0,
]
);
$headers = [
'User-Agent' => 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.77 Safari/537.36',
'Content-Type' => 'application/x-www-form-urlencoded',
'Origin' => 'https://www.facebook.com',
];
foreach ( $facebook_pages as $facebook_page_id => $facebook_page ) {
$facebook_variable_value = '{"pageID":"' . $facebook_page_id . '"}';
$facebook_form_params = array_merge(
$facebook_base_params,
array(
'variables' => $facebook_variable_value,
'doc_id' => FB_UPCOMING_EVENT_DOC_ID,
)
);
$upcoming_event_response = $client->request(
'POST',
'/api/graphql/',
[
'headers' => $headers,
'form_params' => $facebook_form_params,
]
);
$response_code = $upcoming_event_response->getStatusCode();
if ( ! empty( $response_code ) && ( 200 === $response_code ) ) {
$body = $upcoming_event_response->getBody();
if ( null !== $body ) {
$fb_response = json_decode( $body, true );
$fb_events = $fb_response['data']['page']['upcoming_events']['edges'];
}
}
if ( ! empty( $fb_events ) && ( 0 < count( $fb_events ) ) ) {
foreach ( $fb_events as $fb_event ) {
$event = $fb_event['node'];
echo $event['id'] . PHP_EOL;
echo $event['name'] . PHP_EOL;
echo $event['time_range']['start'] . PHP_EOL;
echo $event['event_place']['contextual_name'] . PHP_EOL;
echo $event['event_place']['city']['contextual_name'] . PHP_EOL;
echo $event['event_buy_ticket_url'] . PHP_EOL;
echo PHP_EOL;
}
}
}
exit;
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