function hi_loop($matches)
{
$hivar = $matches[1];
$phpvar = $this->hi_to_var($hivar);
$iterator = strpos($hivar, '.') ? substr($hivar, strrpos($hivar, '.') + 1) : $hivar;
$output = '<?php foreach(' . $phpvar . ' as $' . $iterator . '_index => $' . $iterator . '_1): ?>';
$this->contexts[] = "{$iterator}_1";
$output .= $this->process($matches[2]);
$output .= '<?php endforeach; ?>';
array_pop($this->contexts);
return $output;
}