A simple PHP class and script for building geckoboard-compatible JSON output about the top build crash rates from Crashlytics

crashlytics_dash.php

<?php

class Crashlytics {
  private $orgId;
  private $appId;
  private $devToken;
  private $fabricSession;
  public function __construct( $orgId, $appId, $devToken, $fabricSession ) {
    $this->orgId = $orgId;
    $this->appId = $appId;
    $this->devToken = $devToken;
    $this->fabricSession = $fabricSession;
  }
  
  function request( $file, $query ) {
    $c = curl_init( 'https://fabric.io/api/v2/organizations/'.$this->orgId.'/apps/'.$this->appId.'/growth_analytics/'.$file.'?'.http_build_query($query) );
    $headers = array(
      'X-CRASHLYTICS-DEVELOPER-TOKEN:'.$this->devToken, 
      'Cookie: _fabric_session='.$this->fabricSession
    ); 
    curl_setopt( $c, CURLOPT_HTTPHEADER, $headers );
    curl_setopt( $c, CURLOPT_RETURNTRANSFER, true );
    $response = curl_exec($c);
    return json_decode( $response );
  }
  function getTopBuilds( $start, $end ) {
    return $this->request( 'top_builds', array( 'start' => $start, 'end' => $end ) );
  }
  function getBuildInfo( $date, $builds ) {
    return $this->request( 'builds_info', array( 'date' => $date, 'builds' => implode(',', $builds ) ) ); 
  }
}
$crashlytics = new Crashlytics( ORG_ID, APP_ID, DEV_TOKEN, FABRIC_SESSION );
$buildStats = $crashlytics->getBuildInfo( strtotime( 'yesterday' ), $crashlytics->getTopBuilds( strtotime( '24 hours ago' ), time() )->builds );
/*
{
  "item": 23,
  "min": {
    "value": 10
  },
  "max": {
    "value": 30
  }
}
*/
// First item (current pointer)
$build = current( $buildStats->builds );
$buildName = key( $buildStats->builds );
$response = (object) array(
  'title' => $buildName,
  'item' => round( $build->stability * 100, 2 ),
  'min' => (object) array(
    'value' => 98
  ),
  'max' => (object) array(
    'value' => 100
  ),
);

echo json_encode( $response );