Prestashop / Smarty Template converting to standard php - php

Im trying to convert a prestashop theme into a wordpress theme and im having issues understanding the smarty template lingo.
I was wondering if someone could tell me in standard php syntax what the following means.
{if isset($css_files)}
{foreach from=$css_files key=css_uri item=media}
{if preg_match("#global#",$css_uri)}
<link rel="stylesheet" href="{$css_uri|escape:'html':'UTF-8'}" id="global-style" type="text/css" media="{$media|escape:'html':'UTF-8'}" />
{else}
<link rel="stylesheet" href="{$css_uri|escape:'html':'UTF-8'}" type="text/css" media="{$media|escape:'html':'UTF-8'}" />
{/if}
{/foreach}
{/if}
Any help would be greatly appreciated.
Cheers,

if (isset($css_files)) {
foreach ($css_files as $css_uri => $media) {
if (preg_match("#global#", $css_uri)) {
echo '<link rel="stylesheet" href="' . htmlspecialchars($css_uri, ENT_QUOTES, 'UTF-8') . '" id="global-style" type="text/css" media="' . htmlspecialchars($media, ENT_QUOTES, 'UTF-8') . '" />';
}
else
{
echo '<link rel="stylesheet" href="' . htmlspecialchars($css_uri, ENT_QUOTES, 'UTF-8') . '" type="text/css" media="' . htmlspecialchars($media, ENT_QUOTES, 'UTF-8') . '" />';
}
}
}

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