php数据库返回值有关问题

php数据库返回值问题
本人刚开始学习PHP

	
			$con = mysql_connect("127.0.0.1","root","root");
		if(!con){
			die('Could not connect:'.mysql_error());
		}else{
			mysql_select_db("test",$con);
			$result = mysql_query("select * from user");
			echo "";
				while($row = mysql_fetch_array($result)){
					echo "";
						echo "";
						echo "";
						echo "";
						echo "";
					echo "";
				}
			echo "
" . count($row) . "
" . $row[0] . "
" . $row[1] . "
" . $row[2] . "
";
			mysql_close($con);
		}
	?>
	

我的数据库中就只有id，username，pwd3个字段为什么
echo "" . count($row) . "";统计的count($row)的长度为6啊

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------解决方案--------------------
请认真阅读手册！
mysql_fetch_array -- 从结果集中取得一行作为关联数组，或数字数组，或二者兼有
------解决方案--------------------

            echo "";
                while($row = mysql_fetch_array($result)){
                    echo "";
                        echo "";
                        echo "";
                        echo "";
                    echo "";
                }
            echo "";
            echo "
" . $row[0] . "
" . $row[1] . "
" . $row[2] . "
" . mysql_num_rows($result) . "
";