AWeber WP Integration

//
// Registration Form
//

// Show extra fields on registration form
add_action( 'register_form', 'show_extra_reg_fields', 1 );

function show_extra_reg_fields() { ?>
        <p>
        <label>First Name<br/>
        <input type="text" name="first_name" id="first_name" class="input" value="<?php echo $_POST['first_name']; ?>" size="25" tabindex="30" />
        </label>
        </p>

        <p>
        <label>Last Name<br/>
        <input type="text" name="last_name" id="last_name" class="input" value="<?php echo $_POST['last_name']; ?>" size="25" tabindex="40" />
        </label>
        </p>
<?php }

// Check if extra fields are filled out correctly
add_filter( 'registration_errors', 'check_fields', 10, 3 );

function check_fields($errors, $login, $email) {

        if ( $_POST['first_name'] == '' && $_POST['last_name'] == '' ) {
                $errors->add('empty_realname', "<strong>ERROR</strong>: Please enter your first and last name");
        }
        elseif ( $_POST['first_name'] == '' ) {
                $errors->add('empty_realname', "<strong>ERROR</strong>: Please enter your first name");
        }
        elseif ($_POST['last_name'] == '') {
                $errors->add('empty_realname', "<strong>ERROR</strong>: Please enter your last name");
        }

        return $errors;
}

// Update user profile
add_action( 'user_register', 'register_extra_fields' );

function register_extra_fields( $user_id ) {

        $userdata['ID'] = $user_id;
        $userdata['first_name'] = ucwords(strtolower($_POST['first_name']));
        $userdata['last_name'] = ucwords(strtolower($_POST['last_name']));

        wp_update_user($userdata);
}

//
// E-mail list MAGIC
//

// Checkbox to join list
add_action( 'register_form', 'email_opt_in' );

function email_opt_in() { ?>
    <p>
    <label style="font-size:13px;">
    <input type="checkbox" name="email_opt_in" id="email_opt_in" class="input" checked="checked" value="1" <?php checked( $_POST['email_opt_in'], 1 ); ?> tabindex="99" style="width:12px;padding:0;margin:0 3px 0 0;font-size: 13px;" />
        Join our famous e-mail list
        </label>
        </p>
        <br/><?php
}

// Join to e-mail list
add_action( 'user_register', 'join_email_list' );

function join_email_list( $user_id ) {

        //
        // 0. First Check if they Opted In, otherwise kill
        //
        if ( empty($_POST['email_opt_in']) ) return;

        //
        // 1. Get WP Variables
        //
        $email = $_POST['user_email'];
        $firstname = ucwords(strtolower($_POST['first_name']));
        $lastname = ucwords(strtolower($_POST['last_name']));
        $fullname = $firstname . ' ' . $lastname;

        // Encode them for URL
        $email = urlencode( utf8_encode($email) );
        $fullname = urlencode( utf8_encode($fullname) );

        //
        // 2. Define Aweber Variables
        //
        $listname = 'somelist'; // YOUR LIST NAME
        $adtracking = 'wpreg'; // AD TRACKING

        //
        // 3. Build URL
        //
        $url = 'http://www.aweber.com/scripts/addlead.pl?listname=' . $listname . '&meta_adtracking=' . $adtracking . '&name=' . $fullname . '&email=' . $email . '&meta_message=1&redirect=http://www.aweber.com/form/thankyou_vo.html';

        //
        // 4. Run the URL via CURL
        //

    // build the individual requests as above, but do not execute them
    $ch1 = curl_init( $url );

    // Options: http://se2.php.net/manual/en/function.curl-setopt.php
    $options = array(CURLOPT_RETURNTRANSFER => true,
                         CURLOPT_USERAGENT => 'Mozilla/5.0',
                         CURLOPT_HEADER => false,
                         CURLOPT_FOLLOWLOCATION => true,
                         CURLOPT_TIMEOUT => 10,
                         CURLOPT_FAILONERROR => true,
                         CURLOPT_AUTOREFERER => true,
                        );

        curl_setopt_array( $ch1, $options );

    // build the multi-curl handle, adding both $ch
    $mh = curl_multi_init();
    curl_multi_add_handle($mh, $ch1);

    // execute all queries simultaneously, and continue when all are complete
    $running = null;
    do {
        curl_multi_exec($mh, $running);
    } while ($running);

    // all of our requests are done, we can now access the results
    //$html = curl_multi_getcontent($ch1);

        // close
        curl_multi_remove_handle($mh, $ch1);
        curl_multi_close($mh);

}