Sample PHP code showing how to use OnePage CRM API.

onepagecrm_php_sample.php

<?php
ini_set('display_errors', true);
error_reporting(E_ALL);
// Sample code showing OnePage CRM API usage

$api_login = '_YOUR_ONEPAGE_CRM_LOGIN_';
$api_password = '_YOUR_PASSWORD_';

// Make OnePage CRM API call
function make_api_call($url, $http_method, $post_data = array(), $uid = null, $key = null)
{
   $full_url = 'https://app.onepagecrm.com/api/'.$url;
   $ch = curl_init($full_url);
   curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
   curl_setopt($ch, CURLOPT_CUSTOMREQUEST, $http_method);

   $timestamp = time();
   $auth_data = array($uid, $timestamp, $http_method, sha1($full_url));

   // For POST and PUT methods we have to calculate request body hash
   if($http_method == 'POST' || $http_method == 'PUT'){
      $post_query = http_build_query($post_data);
      curl_setopt($ch, CURLOPT_POSTFIELDS, $post_query);
      $auth_data[] = sha1($post_query);
   }

   // Auth headers
   if($uid != null){ // We are logged in
      $hash = hash_hmac('sha256', implode('.', $auth_data), $key);
      curl_setopt($ch, CURLOPT_HTTPHEADER, array(
	 "X-OnePageCRM-UID: $uid",
	 "X-OnePageCRM-TS: $timestamp",
	 "X-OnePageCRM-Auth: $hash"
      ));
   }

   $result = json_decode(curl_exec($ch));
   curl_close($ch);

   if($result->status > 99){
      echo "API call error: {$result->message}\n";
      return null;
   }

   return $result;
}

if(php_sapi_name() != 'cli'){
   header('Content-Type: text/plain; charset=utf-8');
}

// Login
echo "Login action...\n";
$data = make_api_call('auth/login.json', 'POST', array('login' => $api_login, 'password' => $api_password));
if($data == null){
   exit;
}

// Get UID and API key from result
$uid = $data->data->uid;
$key = base64_decode($data->data->key);
echo "Logged in, our UID is $uid\n";

// Get contacts list
echo "Getting contacts list...\n";
$contacts = make_api_call('contacts.json', 'GET', array(), $uid, $key);
if($data == null){
   exit;
}

echo "We have {$contacts->data->count} contacts.\n";

// Create sample contact and delete it just after
echo "Creating new contact...\n";
$contact_data = array(
   'firstname' => 'Jonh',
   'lastname' => 'Doe',
   'company' => 'Acme Inc.',
   'tags' => 'api_test'
);

$new_contact = make_api_call('contacts.json', 'POST', $contact_data, $uid, $key);
if($new_contact == null){
   exit;
}
$cid = $new_contact->data->id;
echo "Contact created. ID=$cid\n";

echo "Deleting this contact...";
make_api_call("contacts/$cid.json", 'DELETE', array(), $uid, $key);

echo "OK.";

How does this change with the new API v3?

@ryanmac, We'll post updated sample code for our new API