PHP去掉html中的空行、空白函數

function DeleteHtml($str){
					$str = trim($str);
					$str = ereg_replace("\t","",$str);
					$str = ereg_replace("\r\n","",$str);
					$str = ereg_replace("\r","",$str);
					$str = ereg_replace("\n","",$str);
					return trim($str);
				}