php模板语法与html混编

php模板语法

<?php 
// 用二维数组来模拟数据表查询结果集
$stus = [
 ['id' => 1, 'name' => '刘备', 'course' => 'js', 'score' => 83],
 ['id' => 2, 'name' => '关羽', 'course' => 'php', 'score' => 75],
 ['id' => 3, 'name' => '张飞', 'course' => 'js', 'score' => 52],
 ['id' => 4, 'name' => '孙权', 'course' => 'php', 'score' => 88],
 ['id' => 5, 'name' => '周瑜', 'course' => 'js', 'score' => 65],
 ['id' => 6, 'name' => '孔明', 'course' => 'php', 'score' => 53],
]
?>
<table>
    <caption>学生成绩表</caption>
    <thead>
        <tr>
            <th>ID</th>
            <th>姓名</th>
            <th>课程</th>
            <th>成绩</th>
        </tr>
    </thead>
    <tbody>
        <!-- php模板语法 -->
        <?php foreach($stus as $stu) : ?>
            <!-- 当前已离开了php环境,处于html中  -->
            <!-- 使用短标签进行简化: 只打印一个变量  -->
            <!-- 只输出成绩大于70分 -->
            <!-- <?php if ($stu['score'] > 70) : ?>
                    <tr>
                        <td><?php echo $stu['id'] ?></td>
                        <td><?php echo $stu['name'] ?></td>
                        <td><?= $stu['course'] ?></td>
                        <td class="active"><?= $stu['score'] ?></td>
                    </tr>
            <?php endif ?>      -->
            <!-- 输出全部，并将不及格成绩描红 -->
            <tr>
                <td><?php echo $stu['id'] ?></td>
                <td><?php echo $stu['name'] ?></td>
                <td><?= $stu['course'] ?></td>
                <?php $active = $stu['score'] < 60 ? 'active' : '' ?>
                <td class=<?= $active ?>><?php echo $stu['score'] ?></td>            
            </tr>
            <!-- 动态设置样式的方法 -->
        <?php endforeach ?>    
    </tbody>
</table>