Probably the views of this site are using Smarty.
He is a template engine under the table converts the file to PHP markup from the simplified syntax used by it.
See one example using PHP and another using Smarty syntax
In PHP:
<?php if(!empty($foo)): ?>
<?php foreach($foo as $bar): ?>
<a href="<?=$bar['zig']?>"><?=$bar['zag']?></a>
<a href="<?=$bar['zig2']?>"><?=$bar['zag2']?></a>
<a href="<?=$bar['zig3']?>"><?=$bar['zag3']?></a>
<?php endforeach; ?>
<?php else: ?>
There were no rows found.
<?php endif; ?>
Smarty:
{foreach $foo as $bar}
<a href="{$bar.zig}">{$bar.zag}</a>
<a href="{$bar.zig2}">{$bar.zag2}</a>
<a href="{$bar.zig3}">{$bar.zag3}</a>
{foreachelse}
There were no rows found.
{/foreach}
Besides Smarty, there are others template Engines for PHP. Their purpose is the same: to simplify the syntax of templates with PHP. The difference between them is basically syntax and one feature or another:
Probably almost the same as my previous question about % in html, this is probably some template system http://answall.com/questions/76192/uses%C3%A7%C3%A3o-de-em-arquivos-html
– João Reis
I noticed that you do not mark the answers "as correct", to mark them as correct, on the side of each answer has a drawing similar to this - click on what the answer was that helped you. Note that no response has been checked yet: http://answall.com/users/19903/edward-junior?tab=questions
– Guilherme Nascimento