PHP设计和if语句html输出
我对PHP的结构有一个问题。问题是当我使用引导时，if语句结构很奇怪。我尝试做的是检查用户是否登录并显示以下内容： 但是，当他注销时，应该只显示： 您没有登录 然而，情况就是这样： 以下是我的代码：PHP设计和if语句html输出,php,html,twitter-bootstrap,Php,Html,Twitter Bootstrap,我对PHP的结构有一个问题。问题是当我使用引导时，if语句结构很奇怪。我尝试做的是检查用户是否登录并显示以下内容： 但是，当他注销时，应该只显示： 您没有登录 然而，情况就是这样： 以下是我的代码： <?php session_start(); if (isset($_SESSION['id'])) { // session variables into local variables. $id = $_SESSION['id']; $username = $_
<?php
session_start();
if (isset($_SESSION['id'])) {
// session variables into local variables.
$id = $_SESSION['id'];
$username = $_SESSION['username'];
$result = "Welcome back! <br>".$username. "<br> You are tester number: ".$id;
$result .= ' <br> <button class="btn" type="button" onclick=window.parent.location.href="logout.php" target="_parent">Log out</button>';
} else {
$result = "You are not logged in yet";
}
?>
<?php
echo $result;
?>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Welcome - <?php echo $username ;?></title>
<link href="../css/bootstrap.min.css" rel="stylesheet">
<script src="../js/jquery-1.12.3.min.js"> </script>
<script src="../js/bootstrap.min.js"> </script>
</head>
<body>
<div class = "container">
<div class="panel-group" id="accordion" role="tablist" aria-multiselectable="true">
<div class="panel panel-default">
<div class="panel-heading" role="tab" id="headingOne">
<h4 class="panel-title">
<a role="button" data-toggle="collapse" data-parent="#accordion" href="#collapseOne" aria-expanded="true" aria-controls="collapseOne">
Comment
</a>
</h4>
</div>
<div id="collapseOne" class="panel-collapse collapse in" role="tabpanel" aria-labelledby="headingOne">
<div class="panel-body">
<p>
<button class="btn" type="button" onclick=window.parent.location.href="blog/post.php" target="_parent">Comment</button>
</div>
</div>
</div>
<div class="panel panel-default">
<div class="panel-heading" role="tab" id="headingTwo">
<h4 class="panel-title">
<a class="collapsed" role="button" data-toggle="collapse" data-parent="#accordion" href="#collapseTwo" aria-expanded="false" aria-controls="collapseTwo">
Collapsible Group Item #2
</a>
</h4>
</div>
<div id="collapseTwo" class="panel-collapse collapse" role="tabpanel" aria-labelledby="headingTwo">
<div class="panel-body">
Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. 3 wolf moon officia aute, non cupidatat skateboard dolor brunch. Food truck quinoa nesciunt laborum eiusmod. Brunch 3 wolf moon tempor, sunt aliqua put a bird on it squid single-origin coffee nulla assumenda shoreditch et. Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident. Ad vegan excepteur butcher vice lomo. Leggings occaecat craft beer farm-to-table, raw denim aesthetic synth nesciunt you probably haven't heard of them accusamus labore sustainable VHS.
</div>
</div>
</div>
<div class="panel panel-default">
<div class="panel-heading" role="tab" id="headingThree">
<h4 class="panel-title">
<a class="collapsed" role="button" data-toggle="collapse" data-parent="#accordion" href="#collapseThree" aria-expanded="false" aria-controls="collapseThree">
Collapsible Group Item #3
</a>
</h4>
</div>
<div id="collapseThree" class="panel-collapse collapse" role="tabpanel" aria-labelledby="headingThree">
<div class="panel-body">
Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. 3 wolf moon officia aute, non cupidatat skateboard dolor brunch. Food truck quinoa nesciunt laborum eiusmod. Brunch 3 wolf moon tempor, sunt aliqua put a bird on it squid single-origin coffee nulla assumenda shoreditch et. Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident. Ad vegan excepteur butcher vice lomo. Leggings occaecat craft beer farm-to-table, raw denim aesthetic synth nesciunt you probably haven't heard of them accusamus labore sustainable VHS.
</div>
</div>
</div>
</div>
</div>
</body>
</html>
欢迎-
评论
动物保护协会的陈词滥调，埃尼姆·埃乌斯莫德的高寿命accusamus terry richardson广告鱿鱼。3狼月亮奥特餐厅，非丘比特滑板多洛早午餐。食品车奎奴亚藜。早午餐3狼月亮临时，圣塔阿利夸放了一只鸟在上面鱿鱼单一来源咖啡NullaAssumenda shoreditch等Nihil anim keffiyeh helvetica，工艺啤酒工人wes anderson cred Nesciut sapiente ea proident。纯素食主义者，屠夫副洛莫。紧身裤从工艺啤酒场到餐桌，生料牛仔布美学合成物，你可能还没听说过accusamus labore可持续VHS。
动物保护协会的陈词滥调，埃尼姆·埃乌斯莫德的高寿命accusamus terry richardson广告鱿鱼。3狼月亮奥特餐厅，非丘比特滑板多洛早午餐。食品车奎奴亚藜。早午餐3狼月亮临时，圣塔阿利夸放了一只鸟在上面鱿鱼单一来源咖啡NullaAssumenda shoreditch等Nihil anim keffiyeh helvetica，工艺啤酒工人wes anderson cred Nesciut sapiente ea proident。纯素食主义者，屠夫副洛莫。紧身裤从工艺啤酒场到餐桌，生料牛仔布美学合成物，你可能还没听说过accusamus labore可持续VHS。
欢迎-
评论
动物保护协会的陈词滥调，埃尼姆·埃乌斯莫德的高寿命accusamus terry richardson广告鱿鱼。3狼月亮奥特餐厅，非丘比特滑板多洛早午餐。食品车奎奴亚藜。早午餐3狼月亮临时，圣塔阿利夸放了一只鸟在上面鱿鱼单一来源咖啡NullaAssumenda shoreditch等Nihil anim keffiyeh helvetica，工艺啤酒工人wes anderson cred Nesciut sapiente ea proident。纯素食主义者，屠夫副洛莫。紧身裤从工艺啤酒场到餐桌，生料牛仔布美学合成物，你可能还没听说过accusamus labore可持续VHS。
动物保护协会的陈词滥调，埃尼姆·埃乌斯莫德的高寿命accusamus terry richardson广告鱿鱼。3狼月亮奥特餐厅，非丘比特滑板多洛早午餐。食品车奎奴亚藜。早午餐3狼月亮临时，圣塔阿利夸放了一只鸟在上面鱿鱼单一来源咖啡NullaAssumenda shoreditch等Nihil anim keffiyeh helvetica，工艺啤酒工人wes anderson cred Nesciut sapiente ea proident。纯素食主义者，屠夫副洛莫。紧身裤从工艺啤酒场到餐桌，生料牛仔布美学合成物，你可能还没听说过accusamus labore可持续VHS。
欢迎-
评论
动物保护协会的陈词滥调，埃尼姆·埃乌斯莫德的高寿命accusamus terry richardson广告鱿鱼。3狼月亮奥特餐厅，非丘比特滑板多洛早午餐。食品车奎奴亚藜。早午餐3狼月亮临时，圣塔阿利夸放了一只鸟在上面鱿鱼单一来源咖啡NullaAssumenda shoreditch等Nihil anim keffiyeh helvetica，工艺啤酒工人wes anderson cred Nesciut sapiente ea proident。纯素食主义者，屠夫副洛莫。紧身裤从工艺啤酒场到餐桌，生料牛仔布美学合成物，你可能还没听说过accusamus labore可持续VHS。
动物保护协会的陈词滥调，埃尼姆·埃乌斯莫德的高寿命accusamus terry richardson广告鱿鱼。3狼月亮奥特餐厅，非丘比特滑板多洛早午餐。食品车奎奴亚藜。早午餐3狼月亮临时，太阳阿利夸把一只鸟放在上面乌贼单一起源公司
<?php
session_start();
?>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Welcome - <?php echo $username ;?></title>
<link href="../css/bootstrap.min.css" rel="stylesheet">
<script src="../js/jquery-1.12.3.min.js"></script>
<script src="../js/bootstrap.min.js"></script>
</head>
<body>
<?php
if (!isset($_SESSION['id'])) {
echo "You are not logged in yet";
}
else {
// session variables into local variables.
$id = $_SESSION['id'];
$username = $_SESSION['username'];
$result = "Welcome back! <br>".$username. "<br> You are tester number: ".$id;
$result .= ' <br> <button class="btn" type="button" onclick=window.parent.location.href="logout.php" target="_parent">Log out</button>';
echo $result;
?>
<div class="container">
<div class="panel-group" id="accordion" role="tablist" aria-multiselectable="true">
<div class="panel panel-default">
<div class="panel-heading" role="tab" id="headingOne">
<h4 class="panel-title">
<a role="button" data-toggle="collapse" data-parent="#accordion" href="#collapseOne" aria-expanded="true" aria-controls="collapseOne">
Comment
</a>
</h4>
</div>
<div id="collapseOne" class="panel-collapse collapse in" role="tabpanel" aria-labelledby="headingOne">
<div class="panel-body">
<p>
<button class="btn" type="button" onclick=window.parent.location.href="blog/post.php" target="_parent">Comment</button>
</div>
</div>
</div>
<div class="panel panel-default">
<div class="panel-heading" role="tab" id="headingTwo">
<h4 class="panel-title">
<a class="collapsed" role="button" data-toggle="collapse" data-parent="#accordion" href="#collapseTwo" aria-expanded="false" aria-controls="collapseTwo">
Collapsible Group Item #2
</a>
</h4>
</div>
<div id="collapseTwo" class="panel-collapse collapse" role="tabpanel" aria-labelledby="headingTwo">
<div class="panel-body">
Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. 3 wolf moon officia aute, non cupidatat skateboard dolor brunch. Food truck quinoa nesciunt laborum eiusmod. Brunch 3 wolf moon tempor, sunt aliqua put a bird on it squid single-origin coffee nulla assumenda shoreditch et. Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident. Ad vegan excepteur butcher vice lomo. Leggings occaecat craft beer farm-to-table, raw denim aesthetic synth nesciunt you probably haven't heard of them accusamus labore sustainable VHS.
</div>
</div>
</div>
<div class="panel panel-default">
<div class="panel-heading" role="tab" id="headingThree">
<h4 class="panel-title">
<a class="collapsed" role="button" data-toggle="collapse" data-parent="#accordion" href="#collapseThree" aria-expanded="false" aria-controls="collapseThree">
Collapsible Group Item #3
</a>
</h4>
</div>
<div id="collapseThree" class="panel-collapse collapse" role="tabpanel" aria-labelledby="headingThree">
<div class="panel-body">
Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. 3 wolf moon officia aute, non cupidatat skateboard dolor brunch. Food truck quinoa nesciunt laborum eiusmod. Brunch 3 wolf moon tempor, sunt aliqua put a bird on it squid single-origin coffee nulla assumenda shoreditch et. Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident. Ad vegan excepteur butcher vice lomo. Leggings occaecat craft beer farm-to-table, raw denim aesthetic synth nesciunt you probably haven't heard of them accusamus labore sustainable VHS.
</div>
</div>
</div>
</div>
</div>
<?php
}
?>
</body>
</html>