Php yardım

<!-- newsletter -->
<div class="col-sm-12">
<div class="row">
<p><?php echo html_escape(trans("newsletter_exp")); ?></p>
<?php echo form_open('home_controller/add_to_newsletter'); ?>
<div class="newsletter">
<div class="left">
<input type="email" name="email" id="newsletter_email" maxlength="199" placeholder="<?php echo html_escape(trans("email")); ?>" required <?php echo ($rtl == true) ? 'dir="rtl"' : ''; ?>>
</div>
<div class="right">
<button type="submit" class="newsletter-button"><?php echo trans("subscribe"); ?></button>
</div>
</div>
<?php echo form_close(); ?>
</div>
<div class="row">
<p id="newsletter">
<?php
if ($this->session->flashdata('news_error')):
echo '<span class="text-danger">' . $this->session->flashdata('news_error') . '</span>';
endif;

if ($this->session->flashdata('news_success')):
echo '<span class="text-success">' . $this->session->flashdata('news_success') . '</span>';
endif;
?>
</p>
</div>
</div>