<?php
echo ‘<br> --------- 選擇語句 ------- <br>‘;
// 選擇語句
$day = ‘星期日‘;
switch ($day) {
    case ‘星期一‘:
    case ‘星期二‘:
    case ‘星期三‘:
    case ‘星期四‘:
    case ‘星期五‘:
        # code...
        echo ‘上班‘;
        break;
    case ‘星期六‘:
    case ‘星期日‘:
        echo ‘出去玩‘;
        break;
    
 
default:
        # code...
        echo ‘休息‘;
        break;
}

echo ‘<br> --------- for循環語句 ------- <br>‘;
// 循環語句
// for循環語句
for ($i = 0; $i < 10; $i++) {
    echo ‘這是第‘ . $i . ‘行‘;
    echo ‘<br>‘;
}

echo ‘<br> --------- while循環語句 ------- <br>‘;
// while循環語句
$i = 0;
while
 
 ($i < 5) {
    echo ‘嘻嘻‘;
    echo ‘<br>‘;
    $i++;
}

echo ‘<br> --------- do..while循環語句 ------- <br>‘;
// do...while循環語句
do {
    echo ‘哈哈‘;
} while (false);

?>

<Ajax> 二. PHP選擇語句和循環語句