分享几个WordPress不用插件调用随机文章的方法，不仅增强用户粘性，而且当蜘蛛来爬你的文章的时候每次都会有变化，搜索引擎很喜欢。主要用到的是orderby rand参数，下面就随ytkah一起来看看吧
1、最直接的用法，在需要的位置放入下面的代码。
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<?php
$args
=
array
(
'numberposts'
=> 5,
'orderby'
=>
'rand'
,
'post_status'
=>
'publish'
);
$rand_posts
= get_posts(
$args
);
foreach
(
$rand_posts
as
$post
) : ?>
<li><a href=
"<?php the_permalink(); ?>"
><?php the_title(); ?></a></li>
<?php
endforeach
; ?>
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2、用query_posts生成随机文章列表
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<?php
query_posts(
array
(
'orderby'
=>
'rand'
,
'showposts'
=> 2));
if
(have_posts()) :
while
(have_posts()) : the_post();?>
<a href=
"<?php the_permalink() ?>"
rel=
"bookmark"
><?php the_title(); ?></a>
<?php
endwhile
; ?>
<?php
endif
; ?>
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<?php
query_posts(
array
(
'orderby'
=>
'rand'
,
'showposts'
=> 1));
if
(have_posts()) :
while
(have_posts()) : the_post();
the_title();
//这行去掉就不显示标题
the_excerpt();
//去掉这个就不显示摘要了
endwhile
;
endif
; ?>
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3、调用同分类随机文章
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<?php
$cat
= get_the_category();
foreach
(
$cat
as
$key
=>
$category
){
$catid
=
$category
->term_id;
}
$args
=
array
(
'orderby'
=>
'rand'
,
'showposts'
=> 8,
'cat'
=>
$catid
);
$query_posts
=
new
WP_Query();
$query_posts
->query(
$args
);
while
(
$query_posts
->have_posts()) :
$query_posts
->the_post();
?>
<li><a href=
"<?php the_permalink(); ?>"
><?php the_title(); ?></a></li>
<?php
endwhile
;?>
<?php wp_reset_query(); ?>
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4、用wp_query函数
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<?php
$args
=
array
(
'post_type'
=>
'post'
,
'showposts'
=> 4,
'orderby'
=>
'rand'
,
'cat'
=> -36,
//除了id为36的分类
);
$my_query
=
new
WP_Query(
$args
);
if
(
$my_query
->have_posts() ) {
while
(
$my_query
->have_posts()) :
$my_query
->the_post(); ?>
<div
class
=
"item"
>
<a href=
"<?php the_permalink(); ?>"
class
=
"box"
>
<?php the_post_thumbnail(
array
(285,360) ); ?>
<div
class
=
"text"
>
<strong><?php the_title();?></strong>
</div>
</a>
</div>
<?php
endwhile
; wp_reset_query(); } ?>
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5、主题function定义
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/**
* 随机文章
*/
function
random_posts(
$posts_num
=5,
$before
=
'<li>'
,
$after
=
'</li>'
){
global
$wpdb
;
$sql
= "SELECT ID, post_title,guid
FROM
$wpdb
->posts
WHERE post_status =
'publish'
";
$sql
.=
"AND post_title != '' "
;
$sql
.=
"AND post_password ='' "
;
$sql
.=
"AND post_type = 'post' "
;
$sql
.=
"ORDER BY RAND() LIMIT 0 , $posts_num "
;
$randposts
=
$wpdb
->get_results(
$sql
);
$output
=
''
;
foreach
(
$randposts
as
$randpost
) {
$post_title
=
stripslashes
(
$randpost
->post_title);
$permalink
= get_permalink(
$randpost
->ID);
$output
.=
$before
.
'<a href="'
.
$permalink
.
'" rel="bookmark" title="'
;
$output
.=
$post_title
.
'">'
.
$post_title
.
'</a>'
;
$output
.=
$after
;
}
echo
$output
;
}
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然后在想要显示随机文章的地方加入如下代码
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<div
class
=
"right"
>
<h3>随便找点看看！</h3>
<ul>
<?php random_posts(); ?>
</ul>
</div><!-- 随机文章 -->
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