分支与循环、php模板语法与html混编技巧

<!-- 1. 实例演示分支与循环 2. 实例演示php模板语法与html混编技巧 -->
<?php
$age = 28;
$wait = $age-18;
// 1. 单分支
if($age >= 18) echo "welcome" . "<br/>";
// 2. 双分支
if($age > 18) echo "welcome".  "<br/>";
else echo "wait" . $wait  ."year" . "<br/>";
// 3. 多分支
if($age>=18 && $age<25) echo "welcome" . "<br/>";
elseif($age>=25) echo "Hi Dave" . "<br/>";
else echo "wait" . $wait  ."year" . "<br/>";
// 4. 多分支语法糖:switch
switch(true){
    case $age>=25:
        echo "Hello Dave" . "<br/>"; 
        break;
    default:
        echo "wait" . $wait ."year" . "<br/>";
}
// 循环
// while
$i = 0;
while($i<5){
    echo "有".$i."只小猪"."<br/>";
    $i++;
}
echo "<hr>";
// do-while
$i = 0;
do{
    echo "有".$i."只小猪"."<br/>";
    $i++;
}while($i<5);
echo "<hr>";
// for
for($i=0;$i<5;$i++){
    echo "有".$i."只小猪"."<br/>";
}

<?php
    $user_freshman=[
        ["id"=>"0","name"=>"Frank","course"=>"java","score"=>"89"],
        ["id"=>"1","name"=>"John","course"=>"java","score"=>"89"],
        ["id"=>"2","name"=>"Jane","course"=>"java","score"=>"89"],
        ["id"=>"3","name"=>"Dave","course"=>"php","score"=>"99"],
        ["id"=>"4","name"=>"David","course"=>"C","score"=>"79"],
    ];
    $user_sophomore=[
        ["id"=>"0","name"=>"Frank","course"=>"python","score"=>"89"],
        ["id"=>"1","name"=>"John","course"=>"big data","score"=>"89"],
        ["id"=>"2","name"=>"Jane","course"=>"graph","score"=>"89"],
        ["id"=>"3","name"=>"Dave","course"=>"web","score"=>"99"],
        ["id"=>"4","name"=>"David","course"=>"C++","score"=>"79"],
    ];
?>
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>php模板语法与html混编</title>
    <style>
        table {
            border-collapse: collapse;
            width: 360px;
            text-align: center;
        }
        table th,
        table td {
            border: 1px solid #000;
            padding: 5px;
        }
        table caption {
            font-size: 1.3em;
        }
        table thead {
            background-color: lightcyan;
        }
        .active {
            color: red;
        }
    </style>
</head>
<body>
    <table>
        <caption>大一成绩表</caption>
        <thead>
            <tr>
                <th>学号</th>
                <th>姓名</th>
                <th>课程</th>
                <th>成绩</th>
            </tr>
        </thead>
        <tbody>
            <!-- 大一 -->
            <!-- foreach -->
            <?php
            $list=null;
                foreach($user_freshman as $users){
                    $table = "<tr>";
                    $table.="<th>{$users["id"]}</th>";
                    $table.="<th>{$users["name"]}</th>";
                    $table.="<th>{$users["course"]}</th>";
                    $table.="<th>{$users["score"]}</th>";
                    $table.= "</tr>";
                    $list.=$table;
                }
                echo $list
            ?>
        </tbody>
    </table>
    <table>
        <caption>大二成绩表</caption>
        <thead>
            <tr>
                <th>学号</th>
                <th>姓名</th>
                <th>课程</th>
                <th>成绩</th>
            </tr>
        </thead>
        <tbody>
            <!-- 大二 -->
            <?php foreach($user_sophomore as $users):?>
                <tr>
                    <th><?= $users["id"]?></th>
                    <th><?= $users["name"]?></th>
                    <th><?= $users["course"]?></th>
                    <th><?= $users["score"]?></th>
                </tr>
            <?php endforeach ?>
        </tbody>
    </table>
</body>
</html>

更多相关文章

随机推荐