Smarty - VarVar

Meer dan 800 Google hits beweren dat je met Smarty geen variabele variabelen kunt gebruiken.
Vandaar dat ik deze plugin geschreven heb.

De code is de documentatie...

Zie ook deze pagina.

Dit bestand heet modifier.varvar.php en staat in de Smarty plugins directory.

<?php
/**
 *    VarVar - a Smarty modifier plugin to use variable variables
 *    Copyright (C) 2008 Rob la Lau
 *
 *    This program is free software: you can redistribute it and/or modify
 *    it under the terms of version 3 of the GNU General Public License
 *    as published by the Free Software Foundation.
 *
 *    This program is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *    GNU General Public License for more details.
 *
 *    The GNU General Public License can be found at <http://www.gnu.org/licenses/>.
 */

/**
 * Smarty plugin
 * @package Smarty
 * @subpackage plugins
 */

/**
 * Smarty {varvar} modifier plugin
 *
 * Type:     modifier
 * Name:     varvar
 * Date:     2008-02-06
 * Purpose:  Use variable variables
 *
 * Input:
 *           - string (required)
 *
 * Returns:  string
 *
 * Assigns:  nothing
 *
 * Examples:
 *           {"cat_$nr"|varvar}
 *           {"tip.url_`$smarty.section.links.index`"|varvar}
 *
 * ChangeLog:
 *           - 20080206
 *             initial version (0.1)
 *
 * TODO:
 *           - array indexes in square brackets are untested ( $foo[2] )
 *           - variable array keys are untested              ( $foo.$bar )
 *           - object properties are untested                ( $foo->bar )
 *           - object methods are untested                   ( $foo->bar() )
 *           - config file variables are untested            ( #foo# )
 *
 * Credits:
 *           - U.Tews [http://www.phpinsider.com/smarty-forum/profile.php?mode=viewprofile&u=8456]
 *             suggested I'd make this a modifier instead of a function
 *
 * Feedback:
 *           is welcomed at rob@nerdstock.org
 *
 * @link http://nerdstock.org/smarty_varvar
 * @author Rob la Lau <rob@nerdstock.org>
 * @version 0.1
 *
 * @param array
 * @param Smarty
 * @return string
 */

function smarty_modifier_varvar($string) {
	global $smarty;
	if (empty($string)) {
		return;
	}
	$array = explode(".", $string);
	$var = array_shift($array);
	$val = $smarty->get_template_vars($var);
	if (count($array) == 0) {
		return $val;
	}
	else {
		$idx = "['" . join("']['", $array) . "']";
		eval("\$return = \$val$idx;");
		return $return;
	}
}
?>
Reacties zijn welkom:
rob[at]nerdstock.org		 CC-GNU GPL