Php 如何在每次刷新页面时获得3个随机行?
我有以下代码:Php 如何在每次刷新页面时获得3个随机行?,php,mysql,magento,magento-1.5,Php,Mysql,Magento,Magento 1.5,我有以下代码: <?php $i = 0; ?> <?php foreach ($this->getMyCollection() as $faqItem): ?> <a class="anchor" href="<?php echo Mage::getBaseUrl(Mage_Core_Model_Store::URL_TYPE_WEB) ?>faq#<?php echo $i ?>"><?php
<?php $i = 0; ?>
<?php foreach ($this->getMyCollection() as $faqItem): ?>
<a class="anchor" href="<?php echo Mage::getBaseUrl(Mage_Core_Model_Store::URL_TYPE_WEB) ?>faq#<?php echo $i ?>"><?php echo $this->htmlEscape($faqItem->getQuestion()) ?></a><br>
<?php
$i++;
if($i>2)break;
?>
<?php endforeach; ?>
但我想显示的是每次刷新页面时有三行不同的内容。我该怎么做?试试这个:
使用,可以传递数组,并定义所需的结果数。它将返回您想要使用的给定数量的密钥
<?php $i = 0;
$items = $this->getMyCollection();
$keys = array_rand($items, 3);
foreach ($keys as $key):
{
$faqItem = $items[$key];
?>
<a class="anchor" href="<?php echo Mage::getBaseUrl(Mage_Core_Model_Store::URL_TYPE_WEB) ?>faq#<?php echo $i ?>"><?php echo $this->htmlEscape($faqItem->getQuestion()) ?></a><br>
<?php
$i++;
} ?>
或选项2,使用以下功能:
<?php foreach (shuffle($this->getMyCollection()) as $faqItem): ?>
<a class="anchor" href="<?php echo Mage::getBaseUrl(Mage_Core_Model_Store::URL_TYPE_WEB) ?>faq#<?php echo $i ?>"><?php echo $this->htmlEscape($faqItem->getQuestion()) ?></a><br>
<?php
$i++;
if($i>2)break;
?>
<?php endforeach; ?>