Simple template engine for PHP

template.php

function template($template, $array = [])
{
    $res = preg_match_all("/{{(.*?)}}/", $template, $m);
    foreach ($m[1] as $i => $varname) {
        $val = isset($array[trim($varname)])? $array[trim($varname)] : '';
        $template = str_replace($m[0][$i], sprintf('%s', $val), $template);
    }
    return $template;
}

template("<p>Hello, {{name}}.</p>", ["name" => "Marcos"]); // Hello, Marcos.