PHP tiny mustache implementation

gistfile1.aw

<?php

# Simple Mustache template engine
function render($tmpl, $params) {
  return preg_replace_callback(
    '/(?:\{\{(\w+)\}\}|\{\{\{(\w+)\}\}\})/',
    function($m) use($params) {
      if (isset($params[$m[1]])) {
        return htmlspecialchars($params[$m[1]]);
      } else if (isset($params[$m[2]])) {
        return $params[$m[2]];
      } else {
        return $m[0];
      }
    },
    $tmpl);
}

$tmpl = <<<EOS
{{#list}}
>>> {{{key0}}} {{key1}} <<<
{{/list}}
EOS;

$params = array(
  array('key0' => '<b>item0</b>', 'key1' => '<b>orz...</b>'),
  array('key0' => '<b>item1</b>', 'key1' => '<b>orz...</b>')
);

var_dump(render($tmpl, $params));