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<?php
header("Content-Type:text/html;charset=utf-8");
include('./db.inc.php');
function?cateList($pid=0,&$result=array(),$spac=0){
	$spac+=2;
	$sql="SELECT?*?FROM?cate?WHERE?pid=$pid";
	$res=mysql_query($sql);
	while($row=mysql_fetch_assoc($res)){
		$row['catename']=str_repeat('&nbsp;&nbsp;',?$spac).'|--'.$row['catename'];
		$result[]=$row;
		cateList($row['id'],$result,$spac);
	}
	return?$result;
}

function?displayCate($pid=0,$select=1){
	$rs=cateList($pid);
	$str='';
	$str.=?"<select?name='cate'>";
	foreach?($rs?as?$k?=>?$v)?{
		$selectstr='';
		if($v['id']==$select){
			$selectstr="selected";
		}
		$str.=?"<option?{$selectstr}>{$v['catename']}</option>";
	}
	return?$str.=?"</select>";
}
echo?displayCate(0,5);
?>