Basic SDK for Data Finder API.
PHP 5.2+
Guzzle HTTP Client
composer require petermartinez/datafinder-php
require_once('vendor/autoload.php');
require_once('src/Datafinder/Datafinder.php');
$search = array();
$search['d_first'] = "";
$search['d_last'] = "";
$search['d_zip'] = "";
$search['d_fulladdr'] = "";
$search['d_city'] = "";
$search['d_state'] = "";
$dataFinder = new Datafinder\Datafinder("APIKEY");
$results = $dataFinder->contactAppend("email",$search);
echo "<pre>";
print_R($results);
Please see example.php
for more information.