PHP分支与循环,流程控制之模板语法

1. 实例演示分支与循环, 不要抄源码

<?php
$arr = [
    ['id'=>1,'name'=>'Tom','age'=>18,'sex'=>0],
    ['id'=>2,'name'=>'Tom2','age'=>33,'sex'=>0],
    ['id'=>3,'name'=>'Tom3','age'=>10,'sex'=>1],
    ['id'=>4,'name'=>'Tom4','age'=>31,'sex'=>0],
    ['id'=>5,'name'=>'Tom5','age'=>18,'sex'=>2],
];
//if
$age = 22;
if($age > 18){
    echo "恭喜你，成年了";
}
echo '<br>';
//if else
if($age >18){
    echo "恭喜你，成年了";
}else{
    echo "你还没有成年";
}
echo '<br>';
//if else 语法糖三元运算符
echo $age>18? "恭喜你，成年了":"你还没有成年";
echo '<br>';
//if else if ....else
if($age >18 & $age <30){
    echo "恭喜你，成年了";
}elseif($age>=30){
    echo "你已经大于或等于30岁了";
}else{
    echo "你年龄低于18";
}
echo '<br>';
//语法糖switch
switch(true){
    case $age<18: echo "你还小";
    break;
    case $age >=18 & $age <30: echo  "你年青力壮";
    break;
    default:echo "你什么都没有";
}
echo '<br>';
//for循环
for($i = 0; $i<count($arr);$i++){
    echo "你叫{$arr[$i]['name']},年龄是{$arr[$i]['age']}<br>";
}
//foreach 循环
foreach($arr as $key=>$value){
    echo "你是{$value['name']},{$value['age']}岁了<br>";
}

2. 实例演示流程控制之模板语法, 自己测试switch

<?php
$arr = [
    ['id'=>1,'name'=>'Tom','age'=>18,'sex'=>0],
    ['id'=>2,'name'=>'Tom2','age'=>33,'sex'=>0],
    ['id'=>3,'name'=>'Tom3','age'=>10,'sex'=>1],
    ['id'=>4,'name'=>'Tom4','age'=>31,'sex'=>0],
    ['id'=>5,'name'=>'Tom5','age'=>18,'sex'=>2],
];
?>
<!-- 流程模板 -->
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>流程模板</title>
    <style>
    table {
        border-collapse: collapse;
        width: 360px;
        text-align: center;
    }
    table th,
    table td {
        border: 1px solid #000;
        padding: 5px;
    }
    table caption {
        font-size: 1.3em;
    }
    table thead {
        background-color: lightcyan;
    }
    </style>
</head>
<body>
    <table border:1px;>
        <caption>这是一个表格</caption>
        <thead>
            <tr>
                <th>id</th>
                <th>姓名</th>
                <th>年龄</th>
                <th>性别</th>
            </tr>
        </thead>
        <tbody>
            <?php foreach($arr as $key=>$value): ?>
            <tr>
                <td><?=$value['id']?></td>
                <td><?=$value['name']?></td>
                <td><?=$value['age']?></td>
                <td><?=($value['sex']? '男':'女') ?></td>
            </tr>
            <?php  endforeach ?>
        </tbody>
    </table>
</body>
</html>

1. 实例演示分支与循环, 不要抄源码

2. 实例演示流程控制之模板语法, 自己测试switch

相关文章