我有一个定制的PHP / MySql网站，在主页上有一个最新的高级文章列表（称为Summaries）。问题是，在发布内容几个月后，主页变得比它应该更长。如何将帖子数量限制在5个，比如说最新的5个帖子？这是生成不断增长的文章列表的代码，包括缩略图，Contine Reading等。谢谢！
<div id="summaries">
<?php if($summaries){
$count=0;
foreach($summaries as $article) {
$date_string = date('F j, Y',strtotime($article['art_date_added']));
$author_name = $article['adm_full_name'];
if($article['art_excerpt'])
{
$excerpt = substr(strip_tags($article['art_excerpt']),0,340).'[...]' ;
}
else
{
$excerpt = substr(strip_tags($article['art_content']),0,340).'[...]' ;
}
if($count % 2 == 0)
{
$even = TRUE;
}
else
{
$even=FALSE;
}
$count++;
?>
<?php if($even) { ?>
<article class="article">
<a href="<?=$article['permalink']; ?>" class="listThumbnail">
<?php if(!$article['art_image']) { ?>
<img src="<?php echo base_url(); ?>site_images/website_images/default.png" width="120px" class=""/></a>
<?php }else { ?>
<img src="<?php echo base_url(); ?>uploads/<?=$article['art_image']; ?>" width="120px" class=""/></a>
<?php } ?>
<header class="col-lg-9">
<a href="<?=$article['permalink']; ?>"><h2><?=$article['art_title']; ?></h2></a>
<div class="meta">
Posted by <b><?php echo $article['adm_full_name']; ?></b> on <?=$date_string; ?></em>
| <b><?=$article['comments_total']; ?> comments</b></div>
<p>
<?=$excerpt; ?>
<a href="<?=$article['permalink']; ?>" class="cr">Continue Reading </a>
</p>
</header>
<div class="clearfix"></div>
</article>
<?php } ?>
<?php if(!$even) { ?>
<article class="article">
<a href="<?=$article['permalink']; ?>" class="listThumbnailR">
<?php if(!$article['art_image']) { ?>
<img src="<?php echo base_url(); ?>site_images/website_images/default.png" width="120px" class=""/></a>
<?php }else { ?>
<img src="<?php echo base_url(); ?>uploads/<?=$article['art_image']; ?>" width="120px" class=""/></a>
<?php } ?>
<header class="col-lg-9">
<a href="<?=$article['permalink']; ?>"><h2><?=$article['art_title']; ?></h2></a>
<div class="meta">
Posted by <b><?php echo $article['adm_full_name']; ?></b> on <?=$date_string; ?></em>
| <b><?=$article['comments_total']; ?> comments</b></div>
<p>
<?=$excerpt; ?>
<a href="<?=$article['permalink']; ?>" class="cr">Continue Reading </a>
</p>
</header>
<div class="clearfix"></div>
</article>
<?php } ?>
<?php }} ?>
</div>
答案 0 :(得分：0)
最好的方法是限制从服务器发送到客户端的数据。我想你正在使用查询来提取所有记录（或超过5的记录）。只需在查询或ORM查询代码中使用LIMIT子句即可返回最新的5个项目。
答案 1 :(得分：0)
好的，所以这笔交易是设置一个计数器，并将其限制为给定的Summaries文本类别中的5个最新文本。这是完整的代码，按预期工作
<?php if($summaries){
$count=0;
foreach($summaries as $article) {
if($count>=5){ break; } // Choose number of summaries shown in homepage
$date_string = date('F j, Y',strtotime($article['art_date_added']));
$author_name = $article['adm_full_name'];
if($article['art_excerpt'])
{
$excerpt = substr(strip_tags($article['art_excerpt']),0,340).'[...]' ;
}
else
{
$excerpt = substr(strip_tags($article['art_content']),0,340).'[...]' ;
}
if($count % 2 == 0)
{
$even = TRUE;
}
else
{
$even=FALSE;
}
$count++;
?>
<?php if($even) { ?>
<article class="article">
<a href="<?=$article['permalink']; ?>" class="listThumbnail">
<?php if(!$article['art_image']) { ?>
<img src="<?php echo base_url(); ?>site_images/website_images/default.png" width="120px" class=""/></a>
<?php }else { ?>
<img src="<?php echo base_url(); ?>uploads/<?=$article['art_image']; ?>" width="120px" class=""/></a>
<?php } ?>
<header class="col-lg-9">
<a href="<?=$article['permalink']; ?>"><h2><?=$article['art_title']; ?></h2></a>
<div class="meta">
Posted by <b><?php echo $article['adm_full_name']; ?></b> on <?=$date_string; ?></em>
| <b><?=$article['comments_total']; ?> comments</b></div>
<p>
<?=$excerpt; ?>
<a href="<?=$article['permalink']; ?>" class="cr">Continue Reading </a>
</p>
</header>
<div class="clearfix"></div>
</article>
<?php } ?>
<?php if(!$even) { ?>
<article class="article">
<a href="<?=$article['permalink']; ?>" class="listThumbnailR">
<?php if(!$article['art_image']) { ?>
<img src="<?php echo base_url(); ?>site_images/website_images/default.png" width="120px" class=""/></a>
<?php }else { ?>
<img src="<?php echo base_url(); ?>uploads/<?=$article['art_image']; ?>" width="120px" class=""/></a>
<?php } ?>
<header class="col-lg-9">
<a href="<?=$article['permalink']; ?>"><h2><?=$article['art_title']; ?></h2></a>
<div class="meta">
Posted by <b><?php echo $article['adm_full_name']; ?></b> on <?=$date_string; ?></em>
| <b><?=$article['comments_total']; ?> comments</b></div>
<p>
<?=$excerpt; ?>
<a href="<?=$article['permalink']; ?>" class="cr">Continue Reading </a>
</p>
</header>
<div class="clearfix"></div>
</article>
<?php } ?>
<?php }} ?>
</div>