PHP流程控制练习

<?php
// 单分支
$name = 'pharaoh';
if ($name === 'pharaoh')
{
    echo $name;
}
echo '<br>';
// 双分支
$num = 30;
if ($num >= 30)
{
    echo sprintf('你已经%s岁了',$num);
}
else {
    printf('你还小不能访问');
}
echo '<br>';
// 三元运算符
$num = 17;
echo $num >= 30 ? sprintf('你已经%s岁了',$num) : '你还小不能访问';
echo '<hr/  >';
// 多分支
$sex = 'male';
if ($sex === 'male') {
    echo '你是男性';
}elseif ($sex === 'female') {
    echo '你是女性';
}else {
    echo '你是男是女？';
}
echo '<hr/>';
// switch
$time = 45;
switch($time) {
    case $time <= 60 && $time !== 0:
        echo 'You are best!!';
        break;
    case $time >= 60 && $time <= 80:
        echo 'Come on!!';
        break;
    default:
        echo 'looser!';
}

模板语法

 <!-- 模板语法 -->
        <?php foreach($arr as $values): ?>
            <?='<tr>' ?>
                <td><?=$values['name']?></td>
                <td><?=$values['sex']?></td>
                <td><?=$values['power']?></td>
            <?='</tr>' ?>
        <?php endforeach?>
        <?php foreach ($arr as $values): ?>
            <?php if($values['power'] === 0):?>
                <?= '<tr style="color:red">'?>
                <?= '<td>' . $values['name'] . '</td>'?>
                <?= '<td>' . $values['sex']. '</td>'?>
                <?= '<td>' . $values['power']. '</td>'?>
                <?= '</tr>'?>
            <?php endif?>
        <?php endforeach?>