ThinkPHP/Library/Vendor/Smarty/plugins/function.html_image.php

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<?php
/**
 * Smarty plugin
 * 
 * @package Smarty
 * @subpackage PluginsFunction
 */

/**
 * Smarty {html_image} function plugin
 * 
 * Type:     function<br>
 * Name:     html_image<br>
 * Date:     Feb 24, 2003<br>
 * Purpose:  format HTML tags for the image<br>
 * Examples: {html_image file="/images/masthead.gif"}<br>
 * Output:   <img src="/images/masthead.gif" width=400 height=23><br>
 * Params:
 * <pre>
 * - file        - (required) - file (and path) of image
 * - height      - (optional) - image height (default actual height)
 * - width       - (optional) - image width (default actual width)
 * - basedir     - (optional) - base directory for absolute paths, default is environment variable DOCUMENT_ROOT
 * - path_prefix - prefix for path output (optional, default empty)
 * </pre>
 * 
 * @link http://www.smarty.net/manual/en/language.function.html.image.php {html_image}
 *      (Smarty online manual)
 * @author Monte Ohrt <monte at ohrt dot com> 
 * @author credits to Duda <duda@big.hu> 
 * @version 1.0
 * @param array                    $params   parameters
 * @param Smarty_Internal_Template $template template object
 * @return string 
 * @uses smarty_function_escape_special_chars()
 */
function smarty_function_html_image($params, $template)
{
    require_once(SMARTY_PLUGINS_DIR . 'shared.escape_special_chars.php');
 
    $alt = '';
    $file = '';
    $height = '';
    $width = '';
    $extra = '';
    $prefix = '';
    $suffix = '';
    $path_prefix = '';
    $server_vars = $_SERVER;
    $basedir = isset($server_vars['DOCUMENT_ROOT']) ? $server_vars['DOCUMENT_ROOT'] : '';
    foreach($params as $_key => $_val) {
        switch ($_key) {
            case 'file':
            case 'height':
            case 'width':
            case 'dpi':
            case 'path_prefix':
            case 'basedir':
                $$_key = $_val;
                break;