我试图做这件事。
如果用户未登录，则会显示
https://i.imgur.com/nwiOYYN.png此图片为头像。 +登录ahref
如果用户有会话，则会向他显示Skins行。 + logout ahref。
但是，当我做＆＃34;否则＆＃34;它显示了我奇怪的布局。
<?php
session_start(); //starting session
include("config.php"); //including our config.php
error_reporting(E_ALL);
if(isset($_SESSION['username'])) //if session is set, so if user is logged in...
{
$username = $_SESSION['username']; //setting variable username as one from session
$query = mysql_query("SELECT * FROM users WHERE username = '$username'");
while($row = mysql_fetch_assoc($query)) //looping thousgt table to get informations
{
$Skin = $row['Skin'];
}
} else
echo " <li class='second admin-pic'>
<ul class='top_dp_agile'>
<li class='dropdown profile_details_drop'>
<a href='' class='dropdown-toggle' data-toggle='dropdown' aria-expanded='false'>
<div class='profile_img'>
<span class='prfil-img'><img src='https://i.imgur.com/nwiOYYN.png' alt=''> </span>
</div>
</a>
<ul class='dropdown-menu drp-mnu'>
<li> <a href='#'><i class='fa fa-cog'></i> Log IN</a> </li>
<li> <a href='#'><i class='fa fa-user'</i> Make new Account</a> </li>
</ul>
</li>
</ul>
</li>";
?>
这是html
<li class="second admin-pic">
<ul class="top_dp_agile">
<li class="dropdown profile_details_drop">
<a href="#" class="dropdown-toggle" data-toggle="dropdown" aria-expanded="false">
<div class="profile_img">
<span class="prfil-img"><img src="images/<?php echo $Skins ?>.jpg" alt=""> </span>
</div>
</a>
<ul class="dropdown-menu drp-mnu">
<li> <a href="#"><i class="fa fa-cog"></i> Logout</a> </li>
<li> <a href="#"><i class="fa fa-user"></i> Forum</a> </li>
</ul>
</li>
</ul>
</li>
如果是＆gt; 1（化身将被命名为数字）以显示html然后而不是那个HTML只是用echo $ skins替换它，我应该定义$ skins吗？
我想要删除HTML并将其替换为echo，例如
if($Skins > '0') {
$Skins = "<li class='second admin-pic'>
<ul class='top_dp_agile'>
<li class='dropdown profile_details_drop'>
<a href="#" class='dropdown-toggle' data-toggle='dropdown' aria-expanded='false'>
<div class='profile_img'>
<span class='prfil-img'><img src='images/<?php echo $Skins ?>.jpg' alt=''> </span>
</div>
</a>
<ul class='dropdown-menu drp-mnu'>
<li> <a href=''><i class='fa fa-cog'></i> Logout</a> </li>
<li> <a href=''><i class='fa fa-user'></i> Forum</a> </li>
</ul>
</li>
</ul>
</li>";}
和html
// another divs, etc.
?php echo $Skins ?>
new divs
这是好方法吗？因为现在它正好以这种方式显示
