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做采集经常遇到的问题是内容排版问题，用了一些时间写了个用正则替换html标签和样式的函数，共享下。
<div class="codetitle"><a style="CURSOR: pointer" data="7130" class="copybut" id="copybut7130" onclick="doCopy('code7130')"> 代码如下:<div class="codebody" id="code7130">
/*
格式化内容
@param string $content 内容最好统一用utf-8编码
@return string
!本函数需要开启tidy扩展
/
function removeFormat($content) {
$replaces = array (
"/<font.?>/i" => '',
"/</font>/i" => '',
"//i" => '',
"/</h3>/i" => '',
"/<span.?>/i" => '',
"/</span>/i" => '',
"/<div.?>/i" => "",
"/</div>/i" => " ",
"/<!--<.?>-->/i"=>'',
/ "/<table.?>/i" => '',//遇到有表格的内容就不要启用
"/</table>/i" => '',
"/<tbody.?>/i" => '',
"/</tbody>/i" => '',
"/<tr.?>/i" => '',
"/</tr>/i" => ' ',
"/<td.?>/i" => '',/
"/style=.+?['|"]/i" => '',
"/class=.+?['|"]/i" => '',
"/id=.+?['|"]/i"=>'',
"/lang=.+?['|"]/i"=>'',
//"/width=.+?['|"]/i"=>'',//不好控制注释掉
//"/height=.+?['|"]/i"=>'',
"/border=.+?['|"]/i"=>'',
"/face=.+?['|"]/i"=>'',
"/<br.?>[ ]/i" => " ",
"/<iframe.?>.</iframe>/i" => '',
"//i" => ' ',//空格替换掉
"/<p.?>[ |x{3000}|rn]*/ui" => ' ',//替换半角、全角空格，换行符，用排除写入数据库时产生的编码问题);
$config = array(
//'indent' => TRUE,//是否缩进
'output-html' => TRUE,//是否是输出xhtml
'show-body-only'=>TRUE,//是否只获得到body
'wrap' => 0
);
$content = tidy_repair_string($content,$config,'utf8');//先利用php自带的tidy类库修复html标签，不然替换的时候容易出现各种诡异的情况
$content = trim($content);
foreach ( $replaces as $k => $v ) {
$content = preg_replace ( $k,$v,$content );
}if(strpos($content,' ')>6)//部分内容开头可能缺失 标签
$content = ' '.$content;$content = tidy_repair_string($content,'utf8');//再修复一次，可以去除html空标签
$content = trim($content);
return $content;
}
（编辑：李大同）
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