html_output.php

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PHP
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<?php
/**
 * html_output.php
 * HTML-generating functions used throughout the core
 *
 * @package functions
 * @copyright Copyright 2003-2007 Zen Cart Development Team
 * @copyright Portions Copyright 2003 osCommerce
 * @license http://www.zen-cart.com/license/2_0.txt GNU Public License V2.0
 * @version $Id: html_output.php 6726 2007-08-19 03:49:38Z drbyte $
 */

// zen-cart.cn
// Ultimate SEO URLs v2.105
// The HTML href link wrapper function
  function zen_href_link($page = '', $parameters = '', $connection = 'NONSSL', $add_session_id = true, $search_engine_safe = true, $static = false, $use_dir_ws_catalog = true) {
		
		/* QUICK AND DIRTY WAY TO DISABLE REDIRECTS ON PAGES WHEN SEO_URLS_ONLY_IN is enabled IMAGINADW.COM */
		$sefu = explode(",", ereg_replace( ' +', '', SEO_URLS_ONLY_IN ));
		if((SEO_URLS_ONLY_IN!="") && !in_array($page,$sefu)) {
			return original_zen_href_link($page, $parameters, $connection, $add_session_id, $search_engine_safe, $static, $use_dir_ws_catalog);
		}
		
		if (!isset($GLOBALS['seo_urls']) && !is_object($GLOBALS['seo_urls'])) {
			include_once(DIR_WS_CLASSES . 'seo.url.php');

			$GLOBALS['seo_urls'] = &new SEO_URL($_SESSION['languages_id']);
		}

		return $GLOBALS['seo_urls']->href_link($page, $parameters, $connection, $add_session_id, $static, $use_dir_ws_catalog);
  }
 
/*
 * The HTML href link wrapper function
 */
  function original_zen_href_link($page = '', $parameters = '', $connection = 'NONSSL', $add_session_id = true, $search_engine_safe = true, $static = false, $use_dir_ws_catalog = true) {
    global $request_type, $session_started, $http_domain, $https_domain;

    if (!zen_not_null($page)) {
      die('</td></tr></table></td></tr></table><br /><br /><strong class="note">Error!<br /><br />Unable to determine the page link!</strong><br /><br /><!--' . $page . '<br />' . $parameters . ' -->');
    }

    if ($connection == 'NONSSL') {
      $link = HTTP_SERVER;
    } elseif ($connection == 'SSL') {
      if (ENABLE_SSL == 'true') {
        $link = HTTPS_SERVER ;
      } else {
        $link = HTTP_SERVER;
      }
    } else {
      die('</td></tr></table></td></tr></table><br /><br /><strong class="note">Error!<br /><br />Unable to determine connection method on a link!<br /><br />Known methods: NONSSL SSL</strong><br /><br />');
    }

    if ($use_dir_ws_catalog) {
      if ($connection == 'SSL' && ENABLE_SSL == 'true') {
        $link .= DIR_WS_HTTPS_CATALOG;
      } else {
        $link .= DIR_WS_CATALOG;
      }
    }

    if (!$static) {
      if (zen_not_null($parameters)) {
        $link .= 'index.php?main_page='. $page . "&" . zen_output_string($parameters);
      } else {
        $link .= 'index.php?main_page=' . $page;
      }
    } else {
      if (zen_not_null($parameters)) {
        $link .= $page . "?" . zen_output_string($parameters);
      } else {
        $link .= $page;
      }
    }

    $separator = '&';

    while ( (substr($link, -1) == '&') || (substr($link, -1) == '?') ) $link = substr($link, 0, -1);
// Add the session ID when moving from different HTTP and HTTPS servers, or when SID is defined
    if ( ($add_session_id == true) && ($session_started == true) && (SESSION_FORCE_COOKIE_USE == 'False') ) {
      if (defined('SID') && zen_not_null(SID)) {
        $sid = SID;
//      } elseif ( ( ($request_type == 'NONSSL') && ($connection == 'SSL') && (ENABLE_SSL_ADMIN == 'true') ) || ( ($request_type == 'SSL') && ($connection == 'NONSSL') ) ) {
      } elseif ( ( ($request_type == 'NONSSL') && ($connection == 'SSL') && (ENABLE_SSL == 'true') ) || ( ($request_type == 'SSL') && ($connection == 'NONSSL') ) ) {
        if ($http_domain != $https_domain) {
          $sid = zen_session_name() . '=' . zen_session_id();
        }
      }
    }

// clean up the link before processing
    while (strstr($link, '&&')) $link = str_replace('&&', '&', $link);
    while (strstr($link, '&amp;&amp;')) $link = str_replace('&amp;&amp;', '&amp;', $link);

    if ( (SEARCH_ENGINE_FRIENDLY_URLS == 'true') && ($search_engine_safe == true) ) {
      while (strstr($link, '&&')) $link = str_replace('&&', '&', $link);

      $link = str_replace('&amp;', '/', $link);
      $link = str_replace('?', '/', $link);
      $link = str_replace('&', '/', $link);
      $link = str_replace('=', '/', $link);

      $separator = '?';
    }

    if (isset($sid)) {
      $link .= $separator . zen_output_string($sid);
    }

// clean up the link after processing
    while (strstr($link, '&amp;&amp;')) $link = str_replace('&amp;&amp;', '&amp;', $link);

    $link = ereg_replace('&', '&amp;', $link);
    return $link;
  }


/*
 * The HTML image wrapper function for non-proportional images
 * used when "proportional images" is turned off or if calling from a template directory
 */
  function zen_image_OLD($src, $alt = '', $width = '', $height = '', $parameters = '') {
    global $template_dir;

//auto replace with defined missing image
    if ($src == DIR_WS_IMAGES and PRODUCTS_IMAGE_NO_IMAGE_STATUS == '1') {
      $src = DIR_WS_IMAGES . PRODUCTS_IMAGE_NO_IMAGE;
    }

    if ( (empty($src) || ($src == DIR_WS_IMAGES)) && (IMAGE_REQUIRED == 'false') ) {
      return false;
    }

    // if not in current template switch to template_default
    if (!file_exists($src)) {
      $src = str_replace(DIR_WS_TEMPLATES . $template_dir, DIR_WS_TEMPLATES . 'template_default', $src);
    }

// alt is added to the img tag even if it is null to prevent browsers from outputting
// the image filename as default
    $image = '<img src="' . zen_output_string($src) . '" alt="' . zen_output_string($alt) . '"';

    if (zen_not_null($alt)) {
      $image .= ' title=" ' . zen_output_string($alt) . ' "';
    }

    if ( (CONFIG_CALCULATE_IMAGE_SIZE == 'true') && (empty($width) || empty($height)) ) {
      if ($image_size = @getimagesize($src)) {
        if (empty($width) && zen_not_null($height)) {
          $ratio = $height / $image_size[1];
          $width = $image_size[0] * $ratio;
        } elseif (zen_not_null($width) && empty($height)) {
          $ratio = $width / $image_size[0];
          $height = $image_size[1] * $ratio;
        } elseif (empty($width) && empty($height)) {
          $width = $image_size[0];
          $height = $image_size[1];
        }
      } elseif (IMAGE_REQUIRED == 'false') {
        return false;
      }
    }

    if (zen_not_null($width) && zen_not_null($height)) {
      $image .= ' width="' . zen_output_string($width) . '" height="' . zen_output_string($height) . '"';
    }

    if (zen_not_null($parameters)) $image .= ' ' . $parameters;

    $image .= ' />';

    return $image;
  }


/*
 * The HTML image wrapper function
 */
  function zen_image($src, $alt = '', $width = '', $height = '', $parameters = '') {
    global $template_dir;

    // soft clean the alt tag
    $alt = zen_clean_html($alt);

    // use old method on template images
    if (strstr($src, 'includes/templates') or strstr($src, 'includes/languages') or PROPORTIONAL_IMAGES_STATUS == '0') {
      return zen_image_OLD($src, $alt, $width, $height, $parameters);
    }

//auto replace with defined missing image
    if ($src == DIR_WS_IMAGES and PRODUCTS_IMAGE_NO_IMAGE_STATUS == '1') {
      $src = DIR_WS_IMAGES . PRODUCTS_IMAGE_NO_IMAGE;
    }

    if ( (empty($src) || ($src == DIR_WS_IMAGES)) && (IMAGE_REQUIRED == 'false') ) {
      return false;
    }

    // if not in current template switch to template_default
    if (!file_exists($src)) {
      $src = str_replace(DIR_WS_TEMPLATES . $template_dir, DIR_WS_TEMPLATES . 'template_default', $src);
    }

    // hook for handle_image() function such as Image Handler etc
    if (function_exists('handle_image')) {
      $newimg = handle_image($src, $alt, $width, $height, $parameters);
      list($src, $alt, $width, $height, $parameters) = $newimg; 
    }

    // Convert width/height to int for proper validation.
    // intval() used to support compatibility with plugins like image-handler
    $width = empty($width) ? $width : intval($width);
    $height = empty($height) ? $height : intval($height);

// alt is added to the img tag even if it is null to prevent browsers from outputting
// the image filename as default
    $image = '<img src="' . zen_output_string($src) . '" alt="' . zen_output_string($alt) . '"';

    if (zen_not_null($alt)) {
      $image .= ' title=" ' . zen_output_string($alt) . ' "';
    }

    if ( ((CONFIG_CALCULATE_IMAGE_SIZE == 'true') && (empty($width) || empty($height))) ) {
      if ($image_size = @getimagesize($src)) {
        if (empty($width) && zen_not_null($height)) {
          $ratio = $height / $image_size[1];
          $width = $image_size[0] * $ratio;
        } elseif (zen_not_null($width) && empty($height)) {
          $ratio = $width / $image_size[0];
          $height = $image_size[1] * $ratio;
        } elseif (empty($width) && empty($height)) {
          $width = $image_size[0];
          $height = $image_size[1];
        }
      } elseif (IMAGE_REQUIRED == 'false') {
        return false;
      }
    }


    if (zen_not_null($width) && zen_not_null($height) and file_exists($src)) {
//      $image .= ' width="' . zen_output_string($width) . '" height="' . zen_output_string($height) . '"';
// proportional images
      $image_size = @getimagesize($src);
      // fix division by zero error
      $ratio = ($image_size[0] != 0 ? $width / $image_size[0] : 1);
      if ($image_size[1]*$ratio > $height) {
        $ratio = $height / $image_size[1];
        $width = $image_size[0] * $ratio;
      } else {
        $height = $image_size[1] * $ratio;
      }
// only use proportional image when image is larger than proportional size
      if ($image_size[0] < $width and $image_size[1] < $height) {
        $image .= ' width="' . $image_size[0] . '" height="' . intval($image_size[1]) . '"';
      } else {
        $image .= ' width="' . round($width) . '" height="' . round($height) . '"';
      }
    } else {
       // override on missing image to allow for proportional and required/not required
      if (IMAGE_REQUIRED == 'false') {
        return false;
      } else {
        $image .= ' width="' . intval(SMALL_IMAGE_WIDTH) . '" height="' . intval(SMALL_IMAGE_HEIGHT) . '"';
      }
    }

    // inject rollover class if one is defined. NOTE: This could end up with 2 "class" elements if $parameters contains "class" already.
    if (defined('IMAGE_ROLLOVER_CLASS') && IMAGE_ROLLOVER_CLASS != '') {
    	$parameters .= (zen_not_null($parameters) ? ' ' : '') . 'class="rollover"';
    }
    // add $parameters to the tag output
    if (zen_not_null($parameters)) $image .= ' ' . $parameters;

    $image .= ' />';

    return $image;
  }

/*
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html_output.php - 源码说明

本页面展示了「Zen Cart是真正的电子商务艺术」中的 html_output.php 源码文件，采用 PHP 编程语言编写，共 562 行代码。您可以在线阅读完整代码内容，也可以返回资源详情页下载完整源码包进行本地学习和开发。

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