php - 如何显示与 class='current' 取决于父类别

Question

嗨，我有一个导航栏，其中包含两种类型的新闻 TOP 和 Upcoming 以及子类别，并且我有以下代码class='current'在选择子类别时添加，例如来自即将到来的“经济”，但是当我按下同一类别但来自 TOP 新闻时它无论如何都会激活即将到来。

<?PHP
    $category = $_REQUEST[category];

    echo "<ul id='frumos'>";
        echo "<li ";
        if($category == 'economic'){
            echo " class='current'";
        }
        echo "><a href='/upcoming.php?category=economic'>Economic</a></li> ";
        echo "<li";
        if($category == 'other'){
            echo " class='current'";
        }
        echo "><a href='/upcoming.php?category=other'>Freestyle</a></li>";
        echo "<li";
        if($category == 'social'){
            echo " class='current'";
        }
        echo "><a href='/upcoming.php?category=social'>Social</a></li>";
    echo "</ul>";
    ?>

我是 PHP 新手，我尝试了这段代码，但它不起作用（此处为原始菜单）

  <?PHP
        $category = $_REQUEST[category];
   if ($pagename eq 'upcoming')
        echo "<ul id='frumos'>";
            echo "<li ";
            if($category == 'economic'){
                echo " class='current'";
            }
            echo "><a href='/upcoming.php?category=economic'>Economic</a></li> ";
    else
         echo "<ul id='frumos'>";
            echo "<li ";
            if($category == 'economic'){
                echo " class='current'";
            }
            echo "><a href='/?category=economic'>Economic</a></li> ";
            echo "<li";
            if($category == 'other'){
                echo " class='current'";
            }
            echo "><a href='/upcoming.php?category=other'>Freestyle</a></li>";
            echo "<li";
            if($category == 'social'){
                echo " class='current'";
            }
            echo "><a href='/upcoming.php?category=social'>Social</a></li>";
        echo "</ul>";
        ?>

Answer 1

你错过了一些大括号。我不确定这是否是您想要的，但这是开始的地方。

<?PHP
    $category = $_REQUEST[category];
if ($pagename eq 'upcoming') {
    echo "<ul id='frumos'>";
        echo "<li ";
        if($category == 'economic'){
            echo " class='current'";
        }
        echo "><a href='/upcoming.php?category=economic'>Economic</a></li> ";
} else {
     echo "<ul id='frumos'>";
        echo "<li ";
        if($category == 'economic'){
            echo " class='current'";
        }
        echo "><a href='/?category=economic'>Economic</a></li> ";
        echo "<li";
        if($category == 'other'){
            echo " class='current'";
        }
        echo "><a href='/upcoming.php?category=other'>Freestyle</a></li>";
        echo "<li";
        if($category == 'social'){
            echo " class='current'";
        }
        echo "><a href='/upcoming.php?category=social'>Social</a></li>";
}
echo "</ul>";
?>