pp3/module/Application/view/application/login/index.phtml

<?php
/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
?>
<div class="panel panel-default">
    <div class="panel-heading">
        <h3 class="panel-title">Login Provider</h3>
    </div>
    <div class="panel-body">
        <ul class="list-group" id="loginProviderList">
            <?php foreach ($this->providers as $p) { ?>
                <li class="list-group-item">
                    <a href='<?= htmlentities($p['loginUrl'], ENT_HTML5, 'UTF-8') ?>' style='display: block'>
                        <div style='background-image: url(<?= htmlentities($p['iconUrl'], ENT_HTML5, 'UTF-8') ?>);' class="providerIcon"></div>
                        <?= htmlentities($p['name'], ENT_HTML5, 'UTF-8') ?>
                    </a>
                </li>
            <?php } ?>
        </ul>
    </div>
</div>