如何將特定類應用於頁面上的導航鏈接？

Question

我在我的包含文件中有一個導航菜單，但我無法在我的網站上回顯菜單。如果我嘗試將代碼放置爲這樣，則頁面呈現出標記導航菜單的位置。

如果我不在菜單前添加<?php函數，代碼的工作方式會有所不同。

我在想如何在函數內回顯這段代碼。我嘗試將單引號加倍，但我認爲我對菜單中的li內的回顯感到困惑。

解決方案將是偉大的。

感謝

<?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

最簡單的就是不使用初始回聲。在function名稱和<?php在底部添加結束函數大括號後，請注意?>。

<?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

這種替換：

<?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> 

你不需要回聲的顯示HTML代碼的HTML之前剛剛關閉PHP的標籤

希望這將有助於！

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 
} 
?> 

這應該做的工作。