如何将特定类应用于页面上的导航链接？

Question

I have a navigation menu in my includes file, but I am having trouble echoing out the menu across my site. If I try and place the code as so, the page renders out mark up where the nav menu should be.

The code works somewhat if I do not add the <?php function before the menu.

I'm wondering how do I echo this code out within a function. I've tried changing the single quotes to double, but I think I am getting confused by the echo that is within the li in the menu.

A solution would be great.

Thanks

<?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

The simplest is not to use the initial echo. Notice the ?> after the function name and <?php added again at the bottom for the ending function curly brace.

<?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
}?>