nextcloud/apps/admin_export/templates/settings.php

<form id="export" action="#" method="post">
    <fieldset class="personalblock">
        <legend><strong><?php echo $l->t('Export this ownCloud instance');?></strong></legend>
        <p><?php echo $l->t('This will create a compressed file that contains the data of this owncloud instance.
            Please choose the export type:');?>
        </p>
        <h3>What would you like to export?</h3>
        <p>
        <input type="radio" name="export_type" value="instance" /> ownCloud instance ( suitable for import )<br />
		<input type="radio" name="export_type" value="system" /> ownCloud system files<br />
		<input type="radio" name="export_type" value="userfiles" /> Just user files
        <input type="submit" name="admin_export" value="<?php echo $l->t('Export'); ?>" />
    </fieldset>
</form>
<form id="import" action="#" method="post" enctype="multipart/form-data">
    <fieldset class="personalblock">
        <legend><strong><?php echo $l->t('Import an ownCloud instance THIS WILL DELETE ALL CURRENT OWNCLOUD DATA');?></strong></legend>
        <p><?php echo $l->t('All current ownCloud data will be replaced by the ownCloud instance that is uploaded.');?>
        </p>
        <p><input type="file" id="owncloud_import" name="owncloud_import"><label for="owncloud_import"><?php echo $l->t('ownCloud Export Zip File');?></label>
        </p>
        <input type="submit" name="admin_import" value="<?php echo $l->t('Import'); ?>" />
    </fieldset>
</form>