php将html转成wml的WAP标记语言实例

<?php
//---------------------------------------
// Html 标记WAP语言
//----------------------------------------
function html2wml($content)
{
  //保留图片
  preg_match_all("/<img([^>]*)>/isU",$content,$imgarr);
  if(isset($imgarr[0]) && count($imgarr[0])>0 )
  {
   foreach($imgarr[0] as $k=>$v) $content = str_replace($v,"WAP-IMG::{$k}",$content);
  }
  // 过滤掉样式表和脚本
  $content = preg_replace("/<style .*?</style>/is","",$content);
  $content = preg_replace("/<script .*?</script>/is",$content);
  // 首先将各种可以引起换行的标签(如<br />、<p> 之类)替换成换行符"n"
  $content = preg_replace("/<br s*/?/>/i","n",$content);
  $content = preg_replace("/</?p>/i",$content);
  $content = preg_replace("/</?td>/i",$content);
  $content = preg_replace("/</?div>/i",$content);
  $content = preg_replace("/</?blockquote>/i",$content);
  $content = preg_replace("/</?li>/i",$content);
  // 将"?"替换为空格
  $content = preg_replace("/&nbsp;/i"," ",$content);
  $content = preg_replace("/&nbsp/i",$content);
  // 过滤掉剩下的 HTML 标签
  $content = strip_tags($content);
  // 将 HTML 中的实体(entity)转化为它所对应的字符
  $content = html_entity_decode($content,ENT_QUOTES,"GB2312");
  // 过滤掉不能转化的实体(entity)
  $content = preg_replace('/&#.*?;/i','',$content);
  // 上面是将 HTML 网页内容转化为带换行的纯文本,下面是将这些纯文本转化为 WML.
  $content = str_replace('$','$$',$content);
  $content = str_replace("rn",htmlspecialchars($content));
  $content = explode("n",$content);
  for ($i = 0; $i < count($content); $i++)
  {
  $content[$i] = trim($content[$i]);
  // 如果去掉全角空格为空行,则设为空行,否则不对全角空格过滤.
  if (str_replace('　',$content[$i]) == '') $content[$i] = '';
  }
  $content = str_replace("<p><br /></p>n",'<p>'.implode("<br /></p>n<p>",$content)."<br /></p>n");
  //还原图片
  if(isset($imgarr[0]) && count($imgarr[0])>0 )
  {
    foreach($imgarr[0] as $k=>$v)
    {
     $attstr = (preg_match('#/$#',$imgarr[1][$k])) ? '<img '.$imgarr[1][$k].'>' : '<img '.$imgarr[1][$k].' />';
     $content = str_replace("WAP-IMG::{$k}",$attstr,$content);
    }
  }
  $content = preg_replace("/&[a-z]{3,10};/isU",' ',$content);
  return $content;
}
function text2wml($content)
{
  $content = str_replace('$',$content);
  for ($i = 0; $i < count($content); $i++)
  {
  // 过滤首尾空格
  $content[$i] = trim($content[$i]);
  // 如果去掉全角空格为空行,否则不对全角空格过滤.
  if (str_replace("　",$content[$i]) == "") $content[$i] = "";
  }
  //合并各行,转化为 WML,并过滤掉空行
  $content = str_replace("<p><br /></p>n","<p>".implode("<br /></p>n<p>",$content)."<br /></p>n");
  return $content;
}
?>