php分支与循环写法

php分支

代码如下

<?php
echo "多分支<br/>";
 $age = 128;
if($age >=18  &&  $age<35){
    echo '可以吃糖啦!';
}
else if($age >=35  &&  $age<50){
    echo '建议少吃糖!';
}
else if($age<18  ||   $age >60){
    echo '不能吃糖!';
}
else{
    echo '不建议吃糖!';
}
echo '<hr/>';
echo "单分支<br/>";
 $scores = 60;
if($scores>=60){
    echo "您的分数{$scores},及格啦!!!";
}
echo '<hr/>';
$scores = 55;
if($scores>=60){
    echo "您的分数{$scores},及格啦!!!";
}else{
    echo "您的分数{$scores},不及格,要多加强学习啦!!!";
}
echo '<hr/>';
echo "switch写法<br/>";
$age = 25;
switch (true) {
    case  $age >= 18 && $age < 30:
        echo "{$age}岁可以吃糖啦<br>";
        break;
    case  $age >= 30 && $age < 45:
        echo "{$age}岁,建议少吃糖<br>";
        break;
    case $age<18  ||   $age >60:
        echo "{$age}岁,不能吃糖<br>";
        break;
    default:
        echo "{$age}岁,放学,我送你回家<br>";
}
?>

输出结果

php循环输出与模板写法

代码如下

<?php
namespace _0809作业;
$an_arrs =[
    ['id'=>1,'name'=>'安邦','age'=>18,'order'=>1, 'score'=>59 ],
    ['id'=>2,'name'=>'安福','age'=>18,'order'=>2, 'score'=>42 ],
    ['id'=>3,'name'=>'安歌','age'=>18,'order'=>3, 'score'=>61 ],
    ['id'=>4,'name'=>'安国','age'=>18,'order'=>4, 'score'=>73 ],
    ['id'=>5,'name'=>'安和','age'=>18,'order'=>5, 'score'=>89 ],
    ['id'=>6,'name'=>'安康','age'=>18,'order'=>6, 'score'=>46 ],
    ['id'=>7,'name'=>'安澜','age'=>18,'order'=>7, 'score'=>65 ],
    ['id'=>8,'name'=>'安民','age'=>18,'order'=>8, 'score'=>62 ], 
    ['id'=>9,'name'=>'安宁','age'=>18,'order'=>9, 'score'=>52 ], 
    ['id'=>10,'name'=>'安平','age'=>18,'order'=>10,'score'=>55], 
    ['id'=>11,'name'=>'安然','age'=>18,'order'=>11,'score'=>88], 
    ['id'=>12,'name'=>'安顺','age'=>18,'order'=>12,'score'=>60]
];
?>
<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>学生信息管理系统</title>
    <style>
        table {border-collapse: collapse;width: 360px;text-align: center;}
        table th,
        table td {border: 1px solid #000;padding: 5px;}
        table caption {font-size: 1.3em;}
        table thead {background-color: lightcyan;}
    </style>
</head>
<body>
    <?php
    ?>
    <table>
        <caption>学生成绩表</caption>
        <thead>
            <tr>
                <th>ID</th>
                <th>姓名</th>
                <th>年龄</th>
                <th>学号</th>
                <th>成绩</th>
            </tr>
        </thead>
        <tbody>
        <?php     foreach ($an_arrs as $an) : ?>
            <tr>
                <td><?php echo $an['id']?></td>
                <td><?php echo $an['name']?></td>
                <td><?php echo $an['age']?></td>
                <td><?php echo $an['order']?> </td>
                <td><?php echo $an['score']?></td>
            </tr>
            <?php  endforeach ?>
        </tbody>
    </table>
</body>
</html>

php分支

代码如下

输出结果

php循环输出与模板写法

代码如下

输出结果

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