The following wordpress shortcode behaves correctly when placed within single.php
<?php echo do_shortcode( '[contact-form-7 id="13" title="KB EN Contact"]' ); ?>
However, when placing this within another file and using:
<?php echo file_get_contents("en-contact.php", 1);?>
the php is displayed as commented out HTML. The surrounding HTML elements are correctly displayed.
<section id="contact-after-post" class="clearfix">
<h3 id="contact-after-post-title">Didn't find what you were looking for?</h3>
<div id="contact-after-post-number">
</div>
<div id="contact-after-post-number-click">
<div id="number-left">
</div>
<div id="number-right">
</div>
</div>
<div id="contact-after-post-form">
<!--?php echo do_shortcode( '[contact-form-7 id="13" title="KB EN Contact"]' ); ?-->
</div>
</section>
Why has this happened? Why does the behaviour change with external files?