Mine

function value($matches) {	global ${$matches[1]};	if (is_array(${$matches[1]})) return ${$matches[1]}[$matches[2]];	else return ${$matches[1]};}$tpl_main = preg_replace_callback("/<\!--[$](.*)\[(.*)\]-->/" , 'value' , $tpl_main);$tpl_main = preg_replace_callback("/<\!--[$](.*)-->/" , 'value' , $tpl_main);