entityMap|0|type|LINK|mutability|MUTABLE|data|url|https://3v4l.org/iQqqn|blocks|key|6h1mc|text|下面是一个可以运行的示例：https://3v4l.org/iQqqn|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|fl92d|与其在HTML代码中来回编写PHP，为什么不直接使用switch/case求值，设置变量，并在一行HTML代码中将其echo出来，而不是重复执行呢？或者，如果您正在清理您的$_SESSION数据，您可以像下面的示例那样在HTML中对其进行echo：|style|CODE|88jck|<?php
$_SESSION['person_role']+=+'admin';++//+set+for+testing+demo

//+Either+do+your+switch+case+and+set+variables...
$page+=+"default";
$role+=+"default";

//+You+technically+don't+even+need+the+variables,+but+this+example+
//+shows+that+based+on+the+case,+if+you+need+to+use+a+different+name
//+for+role/page+this+is+where+you+would+do+so...
switch($_SESSION['person_role'])+{
++++case+'admin':
++++++++$page+=+$role+=+"admin";
++++break;
++++case+'operator':+
++++++++$page+=+$role+=+"operator";
++++break;
++++case+'partner':
++++++++$page+=+$role+=+"partner";
++++break;
}
?>
++Example+W/+Switch+Case..
++<ul>
++++<li+class="uk-margin-left+uk-margin-right">
++++++<a+href="<?php+echo+$page;+?>.html">
++++++++<?php+echo+ucwords($role);+?>
++++++</a>
++++</li>
++</ul>|code-block|syntax|javascript|391im|另一个选择|e63c8|<?php
//+Just+use+$_SESSION+data+(assuming+sanitized)+in+the+HTML...
$_SESSION['person_role']+=+'operator';++//+set+for+testing+demo
?>
++++Example+just+using+$_SESSION+data..
++++<ul>
++++++<li+class="uk-margin-left+uk-margin-right">
++++++++<a+href="<?php+echo+$_SESSION['person_role'];+?>.html">
++++++++++<?php+echo+ucwords($_SESSION['person_role']);+?>
++++++++</a>
++++++</li>
++++</ul>|1r08l^0|D|M|0|0|3|4|E|3|Q|B|1D|4|1M|4|2E|9|32|4|3B|4|0|0|0|0^^$0|$1|$2|3|4|5|6|$7|8]]]|9|@$A|B|C|D|2|E|F|Y|G|@]|H|@$I|Z|J|10|A|11]]|6|$]]|$A|K|C|L|2|E|F|12|G|@$I|13|J|14|M|N]|$I|15|J|16|M|N]|$I|17|J|18|M|N]|$I|19|J|1A|M|N]|$I|1B|J|1C|M|N]|$I|1D|J|1E|M|N]|$I|1F|J|1G|M|N]|$I|1H|J|1I|M|N]]|H|@]|6|$]]|$A|O|C|P|2|Q|F|1J|G|@]|H|@]|6|$R|S]]|$A|T|C|U|2|E|F|1K|G|@]|H|@]|6|$]]|$A|V|C|W|2|Q|F|1L|G|@]|H|@]|6|$R|S]]|$A|X|C|-4|2|E|F|1M|G|@]|H|@]|6|$]]]]

Here is an example that you can run: <a href="https://3v4l.org/iQqqn" rel="nofollow noreferrer">https://3v4l.org/iQqqn</a>

Instead of writing <code>PHP</code> in and out of <code>HTML</code> code, why not just evaluate with the <code>switch/case</code>, set variables, and <code>echo</code> them out in 1 line of <code>HTML</code> code instead of repeating it? Or, if you're sanitizing your <code>$_SESSION</code> data, you could just <code>echo</code> that out in the <code>HTML</code> like in the example:

<pre class="lang-php prettyprint-override"><code>&lt;?php
$_SESSION['person_role'] = 'admin'; // set for testing demo

// Either do your switch case and set variables...
$page = "default";
$role = "default";

// You technically don't even need the variables, but this example 
// shows that based on the case, if you need to use a different name
// for role/page this is where you would do so...
switch($_SESSION['person_role']) {
 case 'admin':
 $page = $role = "admin";
 break;
 case 'operator': 
 $page = $role = "operator";
 break;
 case 'partner':
 $page = $role = "partner";
 break;
}
?&gt;
 Example W/ Switch Case..
 &lt;ul&gt;
 &lt;li class="uk-margin-left uk-margin-right"&gt;
 &lt;a href="&lt;?php echo $page; ?&gt;.html"&gt;
 &lt;?php echo ucwords($role); ?&gt;
 &lt;/a&gt;
 &lt;/li&gt;
 &lt;/ul&gt;
</code></pre>

Alternatively

<pre><code>&lt;?php
// Just use $_SESSION data (assuming sanitized) in the HTML...
$_SESSION['person_role'] = 'operator'; // set for testing demo
?&gt;
 Example just using $_SESSION data..
 &lt;ul&gt;
 &lt;li class="uk-margin-left uk-margin-right"&gt;
 &lt;a href="&lt;?php echo $_SESSION['person_role']; ?&gt;.html"&gt;
 &lt;?php echo ucwords($_SESSION['person_role']); ?&gt;
 &lt;/a&gt;
 &lt;/li&gt;
 &lt;/ul&gt;
</code></pre>

entityMap|blocks|key|4o6so|text|<?php
$roles+=+array("admin",+"operator",+"partner");
$current_role+=+$_SESSION['person_role'];
if(in_array($current_role,+$roles))+{
+++echo+'<li+class="uk-margin-left+uk-margin-right"><a+href="'.$current_role.'\.html">'.ucfirst($current_role).'</a>
+++++</li>';
}+else+{
++echo+'No+role+in+session';
}
?>|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|8b6s3|unstyled^0|0^^$0|$]|1|@$2|3|4|5|6|7|8|G|9|@]|A|@]|B|$C|D]]|$2|E|4|-4|6|F|8|H|9|@]|A|@]|B|$]]]]

<pre><code>&lt;?php
$roles = array("admin", "operator", "partner");
$current_role = $_SESSION['person_role'];
if(in_array($current_role, $roles)) {
 echo '&lt;li class="uk-margin-left uk-margin-right"&gt;&lt;a href="'.$current_role.'\.html"&gt;'.ucfirst($current_role).'&lt;/a&gt;
 &lt;/li&gt;';
} else {
 echo 'No role in session';
}
?&gt;
</code></pre>

entityMap|blocks|key|u655|text|这里不需要开关箱：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|7mnos|$roles+=+array(
++++'admin'+=>+'Admin',
++++'operator'+=>+'Operator',
++++'partner'+=>+'Partner'
);

if+(array_key_exists($_SESSION['person_role'],+$roles))+{
++++echo+'<li+class="uk-margin-left+uk-margin-right"><a+href="'+.+$_SESSION['person_role']+.+'.html">'+.+$roles[$_SESSION['person_role']]+.+'</a></li>';
}|code-block|syntax|javascript|9go33^0|0|0^^$0|$]|1|@$2|3|4|5|6|7|8|I|9|@]|A|@]|B|$]]|$2|C|4|D|6|E|8|J|9|@]|A|@]|B|$F|G]]|$2|H|4|-4|6|7|8|K|9|@]|A|@]|B|$]]]]

No need for a switch case here:

<pre><code>$roles = array(
 'admin' =&gt; 'Admin',
 'operator' =&gt; 'Operator',
 'partner' =&gt; 'Partner'
);

if (array_key_exists($_SESSION['person_role'], $roles)) {
 echo '&lt;li class="uk-margin-left uk-margin-right"&gt;&lt;a href="' . $_SESSION['person_role'] . '.html"&gt;' . $roles[$_SESSION['person_role']] . '&lt;/a&gt;&lt;/li&gt;';
}
</code></pre>

I'm using iukit and PHP session. 

In my site, I have 3 people(roles): admin, operator and partner.

When I log in with one of these and I change to another page, I want to go back if possible. 

But I need to change one navigator link.

So I tried to make php switch like this:

First I tried a simple switch with 

<pre><code>echo '&lt;li ..&gt;foo&lt;/li&gt;'; 
</code></pre>

but I've seen the documentation and this is what I've found (much better I think).

I tried to put break instead of exit.

<pre class="lang-php prettyprint-override"><code>&lt;?php switch($_SESSION['person_role']): ?&gt;
&lt;?php case 'admin': ?&gt;
&lt;li class="uk-margin-left uk-margin-right"&gt;&lt;a href="admin.html"&gt;Admin&lt;/a&gt;&lt;/li&gt;
&lt;?php exit;?&gt;
&lt;?php case 'operator': ?&gt;
&lt;li class="uk-margin-left uk-margin-right"&gt;&lt;a href="operator.html"&gt;Operator&lt;/a&gt;&lt;/li&gt;
&lt;?php exit;?&gt;
&lt;?php case 'partner': ?&gt;
&lt;li class="uk-margin-left uk-margin-right"&gt;&lt;a href="partner.html"&gt;Partner&lt;/a&gt;&lt;/li&gt;
&lt;?php exit;?&gt;
&lt;?php default: ?&gt;
nothing
&lt;?php endswitch;; ?&gt;
</code></pre>

The result is that all of the link are avaiable for every person.
Why the switch cannot break the code?

PHP Switch want to break html inside code

我使用的是iukit和PHP会话。 在我的网站上，我有3个人(角色)：管理员，操作员和合作伙伴。 当我使用其中一个页面登录并切换到另一个页面时，如果可能的话，我想返回。 但我需要更改一个导航器链接。 所以我试着让php切换成这样： 首先，我尝试了一个简单的开关 echo '<li ..>foo</li>'; 但我已...

问PHP开关想要中断html内部代码
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