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$_GET['brand_id'],'price'=>$_GET['price'],'attr'=>$_GET['attr'],'sort'=>$_GET['sort']);
foreach ($params as $key => $value) {
if($key == 'attr'){
foreach ($value as $k => $attr) {
$attr_params .= '&attr['.$k.']='.$attr;
}
}else{
if($value) $attr_params .= '&'.$key.'='.$value;
}
}?>
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