previous_posts_link()與next_post_lnik()這兩個(gè)函數(shù)相信各位wordpress主題開(kāi)發(fā)者一定不陌生，這兩個(gè)函數(shù)是wordpress用來(lái)調(diào)用當(dāng)前文章的前一篇以及后一篇文章的。但是有些時(shí)候我們?yōu)榱颂岣呔W(wǎng)站PV提高用戶體驗(yàn)想多調(diào)用幾篇文章，例如調(diào)用當(dāng)前文章的前三篇文章以及后三篇文章那該怎么調(diào)用呢？查看了下wordpress的官方文檔，顯然沒(méi)有現(xiàn)成的代碼和函數(shù)可用。那么只好自己動(dòng)手豐衣足食了。以下代碼參考自wordpress默認(rèn)函數(shù)get_adjacent_post函數(shù)修改而來(lái)：

function ztmao_get_post( $previous = true, $number = 1 ) {

//global當(dāng)前文章變量 $post 和數(shù)據(jù)庫(kù)操作類(lèi)wpdb

global $post, $wpdb;

if ( emptyempty( $post ) )

return null;

$current_post_date = $post->post_date;//當(dāng)前文章的時(shí)間

$join = '';

$posts_in_ex_cats_sql = '';

//加入表

$join = " INNER JOIN $wpdb->term_relationships AS tr ON p.ID = tr.object_id INNER JOIN $wpdb->term_taxonomy tt ON tr.term_taxonomy_id = tt.term_taxonomy_id";

//獲取當(dāng)前文章所屬分類(lèi),可以同屬多個(gè)分類(lèi),如果是自定義的分類(lèi)法,將category換成對(duì)應(yīng)的分類(lèi)法即可

$cat_array = wp_get_object_terms($post->ID, 'level', array('fields' => 'ids'));

$join .= " AND tt.taxonomy = 'level' AND tt.term_id IN (" . implode(',', $cat_array) . ")";

//判斷時(shí)間是大于還是小于

$op = $previous ? '<' : '>';

//排序

$order = $previous ? 'DESC' : 'ASC';

$where = $wpdb->prepare("WHERE p.post_date $op %s AND p.post_type = %s AND p.post_status = 'publish' ", $current_post_date, $post->post_type);

$sort = "ORDER BY p.post_date $order LIMIT 0, $number";

$query = "SELECT p.* FROM $wpdb->posts AS p $join $where $sort";

$query_key = 'adjacent_post_' . md5($query);

$result = wp_cache_get($query_key, 'counts');

if ( false !== $result )

return $result;

$result = $wpdb->get_results("SELECT p.* FROM $wpdb->posts AS p $join $where $sort");

if ( null === $result )

$result = '';

wp_cache_set($query_key, $result, 'counts');

return $result;

}

將該函數(shù)放在主題的functions.php文件中即可，調(diào)用該函數(shù)的時(shí)候會(huì)返回一個(gè)數(shù)組，使用示例：

<h4>本篇教程之前的幾篇教程是</h4>

<ul>

<?php

$preposts = v7v3_get_post(true,3);

foreach( $preposts as $postt ){

echo '<li><a href="'.get_permalink($postt->ID).'" title="'.$postt->post_title .'">'.$postt->post_title .'</a></li>';

};

?>

</ul>

<h4>本篇教程之后的幾篇教程是</h4>

<ul>

<?php

$nextposts = ztmao_get_post(false,3);

foreach( $nextposts as $postt ){

echo '<li><a href="'.get_permalink($postt->ID).'" title="'.$postt->post_title .'">'.$postt->post_title .'</a></li>';

};

?>

</ul>