Question

我正在使用以下教程来学习如何在PHP中进行随机播放，但输出很难看。如何更改shuffle的输出更符合我想以列表格式显示的轮询？

我正在使用以下教程来学习如何执行此操作：

http://www.w3schools.com/php/func_array_shuffle.asp

<?php
$my_array = array("a" => "Dog", "b" => "Cat", "c" => "Horse");

shuffle($my_array);
print_r($my_array);
?

但输出很难看：数组（[0] =＆gt; Cat [1] =＆gt; Dog [2] =＆gt;马）

如何使shuffle数组看起来很漂亮？

<ul>
<li><input id="pollRadioButton1" name="pollAnswerID" type="radio" value="1" /> Answer1 for Poll1</li>
<li class="pollChart pollChart1">&nbsp;</li>
<li><input id="pollRadioButton2" name="pollAnswerID" type="radio" value="2" /> Answer2 for Poll1</li>
<li class="pollChart pollChart2">&nbsp;</li>
</ul>

Answer 1

<?php

    $my_array = array("a" => "Dog", "b" => "Cat", "c" => "Horse");
    shuffle($my_array);

?>
<ul>
    <?php foreach ($my_array as $key => $element): ?>
        <li>
            Whatever you want to do with
            <?php echo htmlspecialchars($element) ?>
            (<?php echo htmlspecialchars($key) ?>).
        </li>
        <li class="pollChart pollChart1">&nbsp;</li>
    <?php endforeach ?>
</ul>

Answer 2

print_r()仅用于调试。

要获得“干净”输出，您必须指定应该如何输出：

<?php
$my_array = array("a" => "Dog", "b" => "Cat", "c" => "Horse");

shuffle($my_array);

foreach ($my_array as $key=>$val)
    echo sprintf('%s: %s<br>'."\n",$key,$val);
?>

在您的情况下，输出可能类似于：

echo sprintf('<li><input id="pollRadioButton[]" name="%1$s" '.
             'type="radio" value="%2$s" />%2$s</li>'."\n".
             '<li class="pollChart pollChart1">&nbsp;</li>'."\n",$key,$val);

PHP Shuffle Array提高输出？

2 个答案: