phpthumb for smarty

function.phpthumb.php

<?php

/**
 * Smarty plugin
 * @package Smarty
 * @subpackage plugins
 *
 * Smarty {phpthumb} function plugin
 *
 * Type:     function<br>
 * Name:     phpthumb<br>
 * Purpose:  riscrittura di un link integrando la libreria phpthumb<br>
 * @author   Somma Michele draco88[at]hotmail.it
 * @param array
 * @param Smarty
 * @return string
 * {phpthumb path='path/to/image' attr1=$attr1 atrr2=$attr2  ...attrN=$attrN}
 * {phpthumb path='images/immagine.jpg' w=100 h=50 zc='l'}
 * {phpthumb path='images/immagine.jpg' wh=100}
 */


require_once('phpthumb/phpThumb.config.php');

function smarty_function_phpthumb($params, &$smarty)
{
    if (empty($params['path'])) {
        $smarty->trigger_error("assign: variabile 'path' mancante");
        return;
    }

    $phpthumb = "src=";
    $link= $phpthumb.$params['path'];




    foreach ($params as $k=>$v){
        if ($k!="path") {
            /*eccezzioni*/
            switch ($k) {
                case "wh":
                    $link .= "&w=$v";
                    $link .= "&h=$v";
                    ;
                    break;

                default:
                    $link .= "&$k=$v";

                    break;
            }


        }
    }

    if(!isset($params['zc'])){
        $link .= "&zc=l";
    }

    $link = htmlspecialchars(phpThumbURL($link, 'phpthumb/phpThumb.php'));


    return $link;
}