织梦DEDECMS5.7实现联动筛选（支持多条件多级选项）

//dedecms联动筛选功能 By
function wwwcms_filter($str,$stype="inject") {
if ($stype=="inject")  {
$str = str_replace(
array( "select", "insert", "update", "delete", "alter", "cas", "union", "into", "load_file", "outfile", "create", "join", "where", "like", "drop", "modify", "rename", "'", "/*", "*", "../", "./"),
array("","","","","","","","","","","","","","","","","","","","","",""),
$str);
} else if ($stype=="xss") {
$farr = array("/\s+/" ,
"/<(\/?)(script|META|STYLE|HTML|HEAD|BODY|STYLE |i?frame|b|strong|style|html|img|P|o:p|iframe|u |em|strike|BR|div|a|TABLE|TBODY|object|tr|td |st1:chsdate|FONT|span|MARQUEE|body|title |\r\n|link |meta|\?|\%)([^>]*?)>/isU",
"/(<[^>]*)on[a-zA-Z]+\s*=([^>]*>)/isU",
);
$tarr = array(" ",
"",
"\\1\\2",
);
$str = preg_replace($farr, $tarr, $str);
$str = str_replace(
array( "<", ">", "'", "\"", ";", "/*", "*", "../", "./"),
array("&lt;","&gt;","","","","","","",""),
$str);
}
return $str;
}

/**
*  载入自定义表单(用于发布)
*
* @access    public
* @param     string  $fieldset  字段列表
* @param     string  $loadtype  载入类型
* @return    string
*/

function AddFilter($channelid, $type=1, $fieldsnamef, $defaulttid, $loadtype='autofield')
{
global $tid,$dsql,$id;
$tid = $defaulttid ? $defaulttid : $tid;
if ($id!="")
{
$tidsq = $dsql->GetOne(" Select typeid From `dede_archives` where id='$id' ");
$tid = $tidsq["typeid"];
}
$nofilter = (isset($_REQUEST['TotalResult']) ? "&TotalResult=".$_REQUEST['TotalResult'] : '').(isset($_REQUEST['PageNo']) ? "&PageNo=".$_REQUEST['PageNo'] : '');
$filterarr = wwwcms_filter(stripos($_SERVER['REQUEST_URI'], "list.php?tid=") ? str_replace($nofilter, '', $_SERVER['REQUEST_URI']) : $GLOBALS['cfg_cmsurl']."/plus/list.php?tid=".$tid);
$cInfos = $dsql->GetOne(" Select * From  `dede_channeltype` where id='$channelid' ");
$fieldset=$cInfos['fieldset'];
$dtp = new DedeTagParse();
$dtp->SetNameSpace('field','<','>');
$dtp->LoadSource($fieldset);
$dede_addonfields = '';
if(is_array($dtp->CTags))
{
foreach($dtp->CTags as $tid=>$ctag)
{
$fieldsname = $fieldsnamef ? explode(",", $fieldsnamef) : explode(",", $ctag->GetName());
if(($loadtype!='autofield' || ($loadtype=='autofield' && $ctag->GetAtt('autofield')==1)) && in_array($ctag->GetName(), $fieldsname) )
{
$href1 = explode($ctag->GetName().'=', $filterarr);
$href2 = explode('&', $href1[1]);
$fields_value = $href2[0];
$dede_addonfields .= '<dl><dt>'.$ctag->GetAtt('itemname').'：</dt><dd>';
switch ($type) {
case 1:
$dede_addonfields .= (preg_match("/&".$ctag->GetName()."=/is",$filterarr,$regm) ? '<a title="全部" href="'.str_replace("&".$ctag->GetName()."=".$fields_value,"",$filterarr).'">全部</a>' : '<dd><a class="on">全部</a>').'&nbsp;';

$addonfields_items = explode(",",$ctag->GetAtt('default'));
for ($i=0; $i<count($addonfields_items); $i++)
{
$href = stripos($filterarr,$ctag->GetName().'=') ? str_replace("=".$fields_value,"=".urlencode($addonfields_items[$i]),$filterarr) : $filterarr.'&'.$ctag->GetName().'='.urlencode($addonfields_items[$i]);//echo $href;
$dede_addonfields .= ($fields_value!=urlencode($addonfields_items[$i]) ? '<a title="'.$addonfields_items[$i].'" href="'.$href.'">'.$addonfields_items[$i].'</a>' : '<a class="on">'.$addonfields_items[$i].'</a>')."&nbsp;";
}
$dede_addonfields .= '</dl>';
break;

case 2:
$dede_addonfields .= '<select name="filter"'.$ctag->GetName().' onchange="window.location=this.options[this.selectedIndex].value">
'.'<option value="'.str_replace("&".$ctag->GetName()."=".$fields_value,"",$filterarr).'">全部</option>';
$addonfields_items = explode(",",$ctag->GetAtt('default'));
for ($i=0; $i<count($addonfields_items); $i++)
{
$href = stripos($filterarr,$ctag->GetName().'=') ? str_replace("=".$fields_value,"=".urlencode($addonfields_items[$i]),$filterarr) : $filterarr.'&'.$ctag->GetName().'='.urlencode($addonfields_items[$i]);
$dede_addonfields .= '<option value="'.$href.'"'.($fields_value==urlencode($addonfields_items[$i]) ? ' selected="selected"' : '').'>'.$addonfields_items[$i].'</option>
';
}
$dede_addonfields .= '</select><br/>
';
break;
}
}
}
}
echo $dede_addonfields;
}