PHP把文本文档的内容按行输出来以后，如何按下图的形式显示出来

<br><!--?php<br /-->//写入文本<br>$myfile = fopen("newfile.txt", "a+") or die("Unable to open file!");<br>$username=@$_POST[username];<br>fwrite($myfile, $username);<br><br>$password=@$_POST[password]."<br>";<br>fwrite($myfile, $password);<br><br>//读取文件<br>$myfile = fopen("newfile.txt", "r") or die("Unable to open file!");<br>// 

<br><br><header><br></header><br><br><br><br><br><br><br><br><br><br><table border="0"><tbody><tr><td>用户名</td><td>密码</td></tr><tr> <td><!--?php echo $username ?--></td><td><!--?php echo $password ?--></td><td>删除</td></tr></tbody></table><br><br><br>

<br><br><br>    <meta charset="utf-8"><br>    <title></title><br><br><br><br><!--?php<br /-->$path = 'D:\wamp\www\a.txt';<br>$f = fopen($path, "r");<br>echo "用户名"." " ."密码"." 操作<br>";<br>while(!feof($f))<br>{<br>    if (!feof($f)){<br>        $buffer = fgets($f, 4096);<br>        $arr = explode("<br><font color="#FF8000">------解决思路----------------------</font><br>",$buffer);<br>        if(count($arr) > 1){<br>            echo $arr[0]." " . $arr[1]." 删除<br>";<br>        }<br>    }<br>}<br>fclose($f);<br>?><br><br><br>

<br><!--?php<br /-->$username = $_POST['username'];<br>$password = $_POST['password'];<br>$path = 'D:\wamp\www\a.txt';<br>$fp = fopen($path,"a");<br>fwrite($fp,$username."<br><font color="#FF8000">------解决思路----------------------</font><br>".$password."\r\n");<br>fclose($fp);<br>header("Location:form.php");<br>?><br><br>用户名 密码 操作<br>11 22 删除<br>33 44 删除<br>55 66 删除<br>ss dd 删除<br>s sss 删除<br>