如何将特定类应用于页面上的导航链接？

Question

我在我的包含文件中有一个导航菜单，但我无法在我的网站上回显菜单。如果我尝试将代码放置为这样，则页面呈现出标记导航菜单的位置。

如果我不在菜单前添加<?php函数，代码的工作方式会有所不同。

我在想如何在函数内回显这段代码。我尝试将单引号加倍，但我认为我对菜单中的li内的回显感到困惑。

解决方案将是伟大的。

感谢

<?php 
function nav() { 
echo 
<nav class='container'> 
<ul> 
<li><a <?php if (strpos($_SERVER['PHP_SELF'], 'current-journal')) echo 'class="current"';?> href="current-journal">CURRENT JOURNAL<span class="sub-nav">Our latest and greatest!</span></a></li> 
<li><a <?php if (strpos($_SERVER['PHP_SELF'], 'submit')) echo 'class="current"';?> href="submit">SUBMIT<span class="sub-nav">Your writing</span></a></li> 
<li><a <?php if (strpos($_SERVER['PHP_SELF'], 'submission-guidelines')) echo 'class="current"';?> href="submission-guidelines">SUBMISSION GUIDELINES<span class="sub-nav">Everything you need to know is here</span></a></li> 
<li><a <?php if (strpos($_SERVER['PHP_SELF'], 'contributors')) echo 'class="current"';?> href="contributors">CONTRIBUTORS<span class="sub-nav">See who\'s in our magazine\'s latest issue</span></a></li> 
<li><a <?php if (strpos($_SERVER['PHP_SELF'], 'past-journals')) echo 'class="current"';?> href="past-journals">PAST JOURNALS<span class="sub-nav">Browse our issue archives</span></a></li> 
<li><a <?php if (strpos($_SERVER['PHP_SELF'], 'blog')) echo 'class="current"';?> href="blog">BLOG<span class="sub-nav">Just a blog</span></a></li> 
</ul> 
</nav> 
}?> 

Answer 1

最简单的就是不使用初始回声。在function名称和<?php在底部添加结束函数大括号后，请注意?>。

<?php 
function nav() { 
?> 
<nav class='container'> 
<ul> 
<li><a <?php if (strpos($_SERVER['PHP_SELF'], 'current-journal')) echo 'class="current"';?> href="current-journal">CURRENT JOURNAL<span class="sub-nav">Our latest and greatest!</span></a></li> 
<li><a <?php if (strpos($_SERVER['PHP_SELF'], 'submit')) echo 'class="current"';?> href="submit">SUBMIT<span class="sub-nav">Your writing</span></a></li> 
<li><a <?php if (strpos($_SERVER['PHP_SELF'], 'submission-guidelines')) echo 'class="current"';?> href="submission-guidelines">SUBMISSION GUIDELINES<span class="sub-nav">Everything you need to know is here</span></a></li> 
<li><a <?php if (strpos($_SERVER['PHP_SELF'], 'contributors')) echo 'class="current"';?> href="contributors">CONTRIBUTORS<span class="sub-nav">See who\'s in our magazine\'s latest issue</span></a></li> 
<li><a <?php if (strpos($_SERVER['PHP_SELF'], 'past-journals')) echo 'class="current"';?> href="past-journals">PAST JOURNALS<span class="sub-nav">Browse our issue archives</span></a></li> 
<li><a <?php if (strpos($_SERVER['PHP_SELF'], 'blog')) echo 'class="current"';?> href="blog">BLOG<span class="sub-nav">Just a blog</span></a></li> 
</ul> 
</nav> 
<?php 
}?> 

Answer 2

这种替换：

<?php 
function nav() { ?> 
    <nav class='container'> 
    <ul> 
    <li><a <?php if (strpos($_SERVER['PHP_SELF'], 'current-journal')) echo 'class="current"';?> href="current-journal">CURRENT JOURNAL<span class="sub-nav">Our latest and greatest!</span></a></li> 
    <li><a <?php if (strpos($_SERVER['PHP_SELF'], 'submit')) echo 'class="current"';?> href="submit">SUBMIT<span class="sub-nav">Your writing</span></a></li> 
    <li><a <?php if (strpos($_SERVER['PHP_SELF'], 'submission-guidelines')) echo 'class="current"';?> href="submission-guidelines">SUBMISSION GUIDELINES<span class="sub-nav">Everything you need to know is here</span></a></li> 
    <li><a <?php if (strpos($_SERVER['PHP_SELF'], 'contributors')) echo 'class="current"';?> href="contributors">CONTRIBUTORS<span class="sub-nav">See who\'s in our magazine\'s latest issue</span></a></li> 
    <li><a <?php if (strpos($_SERVER['PHP_SELF'], 'past-journals')) echo 'class="current"';?> href="past-journals">PAST JOURNALS<span class="sub-nav">Browse our issue archives</span></a></li> 
    <li><a <?php if (strpos($_SERVER['PHP_SELF'], 'blog')) echo 'class="current"';?> href="blog">BLOG<span class="sub-nav">Just a blog</span></a></li> 
    </ul> 
    </nav> 

你不需要回声的显示HTML代码的HTML之前刚刚关闭PHP的标签

希望这将有助于！

Answer 3

<?php 
function nav() { 
?> 
<nav class='container'> 
<ul> 
    <?php if(strpos($_SERVER['PHP_SELF'],'current-journal')) {echo "<li><a class='current' href='current-journal'>CURRENT JOURNAL<span class='sub-nav'>Our latest and greatest!</span></a></li>"; }?> 
    <?php if(strpos($_SERVER['PHP_SELF'],'submit')) {echo "<li> <a class='current' href='submit'>SUBMIT<span class='sub-nav'>Your writing</span></a></li>"}?> 
    <?php if(strpos($_SERVER['PHP_SELF'],'submission-guidelines')) {echo "<li> <a class='current' href="submission-guidelines'>SUBMISSION GUIDELINES<span class="sub-nav">Everything you need to know is here</span></a></li>";}?> 
    <?php if(strpos($_SERVER['PHP_SELF'],'contributors')) {echo "<li> <a class='current' href='contributors'>CONTRIBUTORS<span class='sub-nav'>See who\'s in our magazine\'s latest issue</span></a></li>";}?> 
    <?php if(strpos($_SERVER['PHP_SELF'],'past-journals')) {echo "<li> <a class='current' href='past-journals'>PAST JOURNALS<span class='sub-nav'>Browse our issue archives</span></a></li> ";}?> 
    <?php if(strpos($_SERVER['PHP_SELF'],'blog')) {echo "<li> <a class='current' href='blog'>BLOG<span class='sub-nav'>Just a blog</span></a></li>";}?> 

</ul> 
</nav> 
<?php 
} 
?> 

这应该做的工作。