wordpress二次开发中对于functions.php的制作是非常多的,今天我们来分享关于wordpress二次开发技巧之functions.php的制作,希望大家可以喜欢!
下面根据需求,对各种能实现进行简单介绍。
先对functions.php文件进行介绍,通过代码实现各功能。
1. widgets sidebar 侧边栏小工具
wordpress二次开发技巧之functions.php篇
02 |
if ( function_exists( 'register_sidebar' <span class = "crayon-sy" >) ) { |
03 |
register_sidebar( array ( |
04 |
'name' <span class = "crayon-o" >=> 'First_sidebar' <span class = "crayon-sy" >, |
05 |
'before_widget' <span class = "crayon-o" >=> '' <span class = "crayon-sy" >, |
06 |
'after_widget' <span class = "crayon-o" >=> '' <span class = "crayon-sy" >, |
07 |
'before_title' <span class = "crayon-o" >=> '<h4>' <span class = "crayon-sy" >, |
08 |
'after_title' <span class = "crayon-o" >=> '</h4>' |
10 |
register_sidebar( array ( |
11 |
'name' <span class = "crayon-o" >=> 'Second_sidebar' <span class = "crayon-sy" >, |
12 |
'before_widget' <span class = "crayon-o" >=> '' <span class = "crayon-sy" >, |
13 |
'after_widget' <span class = "crayon-o" >=> '' <span class = "crayon-sy" >, |
14 |
'before_title' <span class = "crayon-o" >=> '<h4>' <span class = "crayon-sy" >, |
15 |
'after_title' <span class = "crayon-o" >=> '</h4>' |
17 |
register_sidebar( array ( |
18 |
'name' <span class = "crayon-o" >=> 'Third_sidebar' <span class = "crayon-sy" >, |
19 |
'before_widget' <span class = "crayon-o" >=> '' <span class = "crayon-sy" >, |
20 |
'after_widget' <span class = "crayon-o" >=> '' <span class = "crayon-sy" >, |
21 |
'before_title' <span class = "crayon-o" >=> '<h4>' <span class = "crayon-sy" >, |
22 |
'after_title' <span class = "crayon-o" >=> '</h4>' |
24 |
register_sidebar( array ( |
25 |
'name' <span class = "crayon-o" >=> 'Fourth_sidebar' <span class = "crayon-sy" >, |
26 |
'before_widget' <span class = "crayon-o" >=> '' <span class = "crayon-sy" >, |
27 |
'after_widget' <span class = "crayon-o" >=> '' <span class = "crayon-sy" >, |
28 |
'before_title' <span class = "crayon-o" >=> '<h4>' <span class = "crayon-sy" >, |
29 |
'after_title' <span class = "crayon-o" >=> '</h4>' |
33 |
register_nav_menus( array ( "primary" => "Primary Navigation" )); |
2. 后台支持自定义菜单
wordpress二次开发技巧之functions.php篇
02 |
if (function_exists( 'register_nav_menus' <span class = "crayon-sy" >)){ |
05 |
'header-menu' <span class = "crayon-o" >=> __( '导航自定义菜单' <span class = "crayon-sy" >), |
06 |
'footer-menu' <span class = "crayon-o" >=> __( '页角自定义菜单' <span class = "crayon-sy" >), |
07 |
'sider-menu' <span class = "crayon-o" >=> __( '侧边栏菜单' <span class = "crayon-sy" >), |
08 |
'primary' <span class = "crayon-o" >=> __( 'Primary Navigation' <span class = "crayon-sy" >, 'lee' <span class = "crayon-sy" >), |
输出菜单,在如header.php插入显示菜单的代码
1 |
<?php wp_nav_menu( array ( 'container' <span class = "crayon-o" >=> '' <span class = "crayon-sy" >) ); ?> |
3. 面包屑导航
02 |
function wheatv_breadcrumbs() { |
03 |
$delimiter = '<i>></i>' <span class = "crayon-sy" >; |
04 |
$name = '首页' <span class = "crayon-sy" >; |
05 |
$currentBefore = '' <span class = "crayon-sy" >; |
06 |
$currentAfter = '' <span class = "crayon-sy" >; |
08 |
if ( !is_home() && !is_front_page() || is_paged() ) { |
10 |
echo '' <span class = "crayon-sy" >; |
13 |
$home = get_option( 'home' <span class = "crayon-sy" >); |
14 |
echo '<a href="' <span class ="crayon-sy ">.$home.'" >'<span class = "crayon-sy" >. $name . ' </a>' <span class = "crayon-sy" >. $delimiter . ' ' <span class = "crayon-sy" >; |
16 |
if ( is_category() ) { |
18 |
$cat_obj = $wp_query ->get_queried_object(); |
19 |
$thisCat = $cat_obj ->term_id; |
20 |
$thisCat = get_category( $thisCat ); |
21 |
$parentCat = get_category( $thisCat ->parent); |
22 |
if ( $thisCat ->parent != 0) echo (get_category_parents( $parentCat , TRUE, ' ' <span class = "crayon-sy" >. $delimiter . ' ' <span class = "crayon-sy" >)); |
23 |
echo $currentBefore . '' <span class = "crayon-sy" >; |
25 |
echo '' <span class = "crayon-sy" >. $currentAfter ; |
27 |
} elseif ( is_day() ) { |
28 |
echo '' <span class = "crayon-sy" >. get_the_time( 'Y' <span class = "crayon-sy" >) . ' ' <span class = "crayon-sy" >. $delimiter . ' ' <span class = "crayon-sy" >; |
29 |
echo '' <span class = "crayon-sy" >. get_the_time( 'F' <span class = "crayon-sy" >) . ' ' <span class = "crayon-sy" >. $delimiter . ' ' <span class = "crayon-sy" >; |
30 |
echo $currentBefore . get_the_time( 'd' <span class = "crayon-sy" >) . $currentAfter ; |
32 |
} elseif ( is_month() ) { |
33 |
echo '' <span class = "crayon-sy" >. get_the_time( 'Y' <span class = "crayon-sy" >) . ' ' <span class = "crayon-sy" >. $delimiter . ' ' <span class = "crayon-sy" >; |
34 |
echo $currentBefore . get_the_time( 'F' <span class = "crayon-sy" >) . $currentAfter ; |
36 |
} elseif ( is_year() ) { |
37 |
echo $currentBefore . get_the_time( 'Y' <span class = "crayon-sy" >) . $currentAfter ; |
39 |
} elseif ( is_single() ) { |
40 |
$cat = get_the_category(); $cat = $cat [0]; |
41 |
echo get_category_parents( $cat , TRUE, ' ' <span class = "crayon-sy" >. $delimiter . ' ' <span class = "crayon-sy" >); |
46 |
} elseif ( is_page() && ! $post ->post_parent ) { |
51 |
} elseif ( is_page() && $post ->post_parent ) { |
52 |
$parent_id = $post ->post_parent; |
53 |
$breadcrumbs = array (); |
55 |
$page = get_page( $parent_id ); |
56 |
$breadcrumbs [] = '' <span class = "crayon-sy" >. get_the_title( $page ->ID) . '' <span class = "crayon-sy" >; |
57 |
$parent_id = $page ->post_parent; |
59 |
$breadcrumbs = array_reverse ( $breadcrumbs ); |
60 |
foreach ( $breadcrumbs as $crumb ) echo $crumb . ' ' <span class = "crayon-sy" >. $delimiter . ' ' <span class = "crayon-sy" >; |
65 |
} elseif ( is_search() ) { |
66 |
echo $currentBefore . '搜索结果' <span class = "crayon-sy" >. get_search_query() . '' <span class = "crayon-sy" >. $currentAfter ; |
68 |
} elseif ( is_tag() ) { |
69 |
echo $currentBefore . '搜索标签: ' <span class = "crayon-sy" >; |
71 |
echo '' <span class = "crayon-sy" >. $currentAfter ; |
73 |
} elseif ( is_author() ) { |
75 |
$userdata = get_userdata( $author ); |
76 |
echo $currentBefore . 'Articles posted by ' <span class = "crayon-sy" >. $userdata ->display_name . $currentAfter ; |
78 |
} elseif ( is_404() ) { |
79 |
echo $currentBefore . 'Error 404' <span class = "crayon-sy" >. $currentAfter ; |
82 |
if ( get_query_var( 'paged' <span class = "crayon-sy" >) ) { |
83 |
if ( is_category() || is_day() || is_month() || is_year() || is_search() || is_tag() || is_author() ) echo ' (' <span class = "crayon-sy" >; |
84 |
echo __( '第' <span class = "crayon-sy" >) . '' <span class = "crayon-sy" >. get_query_var( 'paged' <span class = "crayon-sy" >) . '页' <span class = "crayon-sy" >; |
85 |
if ( is_category() || is_day() || is_month() || is_year() || is_search() || is_tag() || is_author() ) echo ')' <span class = "crayon-sy" >; |
87 |
echo '' <span class = "crayon-sy" >; |
显示面包屑导航(category.php或single.php等)
1 |
<?php wheatv_breadcrumbs(); ?> |
4. 文章访问量(点击数)
wordpress二次开发技巧之functions.php篇
02 |
function getPostViews( $postID ){ |
03 |
$count_key = 'post_views_count' <span class = "crayon-sy" >; |
04 |
$count = get_post_meta( $postID , $count_key , true); |
05 |
if ( $count == '' <span class = "crayon-sy" >){ |
06 |
delete_post_meta( $postID , $count_key ); |
07 |
add_post_meta( $postID , $count_key , '0' <span class = "crayon-sy" >); |
12 |
function setPostViews( $postID ) { |
13 |
$count_key = 'post_views_count' <span class = "crayon-sy" >; |
14 |
$count = get_post_meta( $postID , $count_key , true); |
15 |
if ( $count == '' <span class = "crayon-sy" >){ |
17 |
delete_post_meta( $postID , $count_key ); |
18 |
add_post_meta( $postID , $count_key , '0' <span class = "crayon-sy" >); |
21 |
update_post_meta( $postID , $count_key , $count ); |
显示点击量(如category.php或single.php)
1 |
<?php echo getPostViews(get_the_ID()); ?> |
5. 文章中所有链接新窗口中打开
2 |
function autoblank( $content ) { |
3 |
$content = preg_replace( "/<a(.*?)>/" , "<a$1 target=" _blank ">" , $content ); |
6 |
add_filter( 'the_content' <span class = "crayon-sy" >, 'autoblank' <span class = "crayon-sy" >); |
6. 清除wp自带无用头部信息
03 |
remove_action( 'wp_head' <span class = "crayon-sy" >, 'feed_links' <span class = "crayon-sy" >, 2 ); |
04 |
remove_action( 'wp_head' <span class = "crayon-sy" >, 'feed_links_extra' <span class = "crayon-sy" >, 3 ); |
05 |
remove_action( 'wp_head' <span class = "crayon-sy" >, 'rsd_link' <span class = "crayon-sy" >); |
06 |
remove_action( 'wp_head' <span class = "crayon-sy" >, 'wlwmanifest_link' <span class = "crayon-sy" >); |
07 |
remove_action( 'wp_head' <span class = "crayon-sy" >, 'index_rel_link' <span class = "crayon-sy" >); |
08 |
remove_action( 'wp_head' <span class = "crayon-sy" >, 'parent_post_rel_link' <span class = "crayon-sy" >, 10, 0 ); |
09 |
remove_action( 'wp_head' <span class = "crayon-sy" >, 'start_post_rel_link' <span class = "crayon-sy" >, 10, 0 ); |
10 |
remove_action( 'wp_head' <span class = "crayon-sy" >, 'adjacent_posts_rel_link_wp_head' <span class = "crayon-sy" >, 10, 0 ); |
12 |
remove_action( 'publish_future_post' <span class = "crayon-sy" >, 'check_and_publish_future_post' <span class = "crayon-sy" >, 10, 1 ); |
16 |
remove_action( 'wp_head' <span class = "crayon-sy" >, 'wp_generator' <span class = "crayon-sy" >); |
18 |
remove_action( 'wp_footer' <span class = "crayon-sy" >, 'wp_print_footer_scripts' <span class = "crayon-sy" >); |
19 |
remove_action( 'wp_head' <span class = "crayon-sy" >, 'wp_shortlink_wp_head' <span class = "crayon-sy" >, 10, 0 ); |
20 |
remove_action( 'template_redirect' <span class = "crayon-sy" >, 'wp_shortlink_header' <span class = "crayon-sy" >, 11, 0 ); |
21 |
add_action( 'widgets_init' <span class = "crayon-sy" >, 'my_remove_recent_comments_style' <span class = "crayon-sy" >); |
22 |
function my_remove_recent_comments_style() { |
23 |
global $wp_widget_factory ; |
24 |
remove_action( 'wp_head' <span class = "crayon-sy" >, array ( $wp_widget_factory ->widgets[ 'WP_Widget_Recent_Comments' <span class = "crayon-sy" >], 'recent_comments_style' <span class = "crayon-sy" >)); |
7. 自动保存和文章修订功能
wordpress二次开发技巧之functions.php篇
2 |
define( 'AUTOSAVE_INTERVAL' <span class = "crayon-sy" >, 120 ); |
3 |
define( 'WP_POST_REVISIONS' <span class = "crayon-sy" >, false); |
8. 彩色静态标签云
wordpress二次开发技巧之functions.php篇
02 |
function colorCloud( $text ) { |
03 |
$text = preg_replace_callback( '|<a (.+?)>|i' <span class = "crayon-sy" >, 'colorCloudCallback' <span class = "crayon-sy" >, $text ); |
06 |
function colorCloudCallback( $matches ) { |
08 |
$color = dechex (rand(0,16777215)); |
09 |
$pattern = '/style=(' | ")(.*)('|" )/i'<span class = "crayon-sy" >; |
10 |
$text = preg_replace( $pattern , "style=" color:#{ $color }; $2 ; "" , $text ); |
13 |
add_filter( 'wp_tag_cloud' <span class = "crayon-sy" >, 'colorCloud' <span class = "crayon-sy" >, 1); |
输出标签
1 |
<?php wp_tag_cloud( 'smallest=10&largest=14&number=32&order=RAND' <span class = "crayon-sy" >) ?> |
9. 搜索结果关键词高亮显示
具体实现,再另写文章介绍,后续可通过搜索找到。
wordpress二次开发技巧之functions.php篇
02 |
function lee_set_query() { |
03 |
$query = attribute_escape(get_search_query()); |
04 |
if ( strlen ( $query ) > 0){ |
06 |
<script type= "text/javascript" > |
07 |
var lee_query = "'.$query.'" ; |
09 |
'<span class = "crayon-sy" >; |
12 |
function lee_init_jquery() { |
13 |
wp_enqueue_script( 'jquery' <span class = "crayon-sy" >); |
15 |
add_action( 'init' <span class = "crayon-sy" >, 'lee_init_jquery' <span class = "crayon-sy" >); |
16 |
add_action( 'wp_print_scripts' <span class = "crayon-sy" >, 'lee_set_query' <span class = "crayon-sy" >); |
10. 自定义登录界面
在不更改html的情况下,可通过引入样式文件,自定义登录界面。
wordpress二次开发技巧之functions.php篇
02 |
function custom_login(){ |
03 |
echo '<link rel="stylesheet" type="text/css" href="' <span class ="crayon-sy ">. get_bloginfo('template_directory'<span class=" crayon-sy ">) . '/css/login.css" />'<span class = "crayon-sy" >; |
05 |
add_action( 'login_head' <span class = "crayon-sy" >, 'custom_login' <span class = "crayon-sy" >); |
07 |
function login_headerurl( $url ) { |
08 |
return get_bloginfo( 'url' <span class = "crayon-sy" >); |
10 |
add_filter( 'login_headerurl' <span class = "crayon-sy" >, 'login_headerurl' <span class = "crayon-sy" >); |
12 |
function login_headertitle( $title ){ |
13 |
return __( '轩枫阁' <span class = "crayon-sy" >); |
15 |
add_filter( 'login_headertitle' <span class = "crayon-sy" >, 'login_headertitle' <span class = "crayon-sy" >); |
11. 获得当前文章的位置
wordpress二次开发技巧之functions.php篇
wordpress二次开发技巧之functions.php篇
02 |
function num_Pcurrent_post() { |
04 |
$postid = get_the_ID(); |
05 |
$getpost = get_post( $postid ); |
06 |
$daysago = $getpost ->post_date; |
07 |
$today = gmdate ( 'Y-m-d H:i:s' <span class = "crayon-sy" >, time() + 3600 * 8); |
08 |
$count_posts = wp_count_posts(); |
09 |
$num_all_posts = $count_posts ->publish; |
10 |
$result = $wpdb ->get_results( "SELECT ID FROM $wpdb->posts WHERE post_date BETWEEN '$daysago' AND '$today' AND post_status='publish' AND post_type='post' ORDER BY post_date DESC " ); |
11 |
foreach ( $result as $Item ) { |
12 |
$post_ID [] = $Item ->ID; |
14 |
$num_current_post = count ( $post_ID )-1; |
15 |
$output .= $num_current_post . '/' <span class = "crayon-sy" >. $num_all_posts ; |
18 |
function num_Ncurrent_post() { |
20 |
$postid = get_the_ID(); |
21 |
$getpost = get_post( $postid ); |
22 |
$daysago = $getpost ->post_date; |
23 |
$today = gmdate ( 'Y-m-d H:i:s' <span class = "crayon-sy" >, time() + 3600 * 8); |
24 |
$count_posts = wp_count_posts(); |
25 |
$num_all_posts = $count_posts ->publish; |
26 |
$result = $wpdb ->get_results( "SELECT ID FROM $wpdb->posts WHERE post_date BETWEEN '$daysago' AND '$today' AND post_status='publish' AND post_type='post' ORDER BY post_date DESC " ); |
27 |
foreach ( $result as $Item ) { |
28 |
$post_ID [] = $Item ->ID; |
30 |
$num_current_post = count ( $post_ID )+1; |
31 |
$output .= $num_current_post . '/' <span class = "crayon-sy" >. $num_all_posts ; |
显示上下篇及位置,在single.php
1 |
<?php if (get_next_post()) { echo next_post_link( '%link' <span class = "crayon-sy" >,__( '<span title="上一篇:%title">上一篇</span>' <span class = "crayon-sy" >, 'lee' <span class = "crayon-sy" >), $in_same_cat = false, $excluded_categories = '11' <span class = "crayon-sy" >); } else { echo '<a class="arc_nav_new">已最新</a>' <span class = "crayon-sy" >; }?> |
2 |
<?php num_Pcurrent_post(); ?> |
4 |
<?php num_Ncurrent_post(); ?> |
5 |
<?php if (get_previous_post()) { echo previous_post_link( '%link' <span class = "crayon-sy" >,__( '<span title="下一篇:%title">下一篇</span>' <span class = "crayon-sy" >, 'lee' <span class = "crayon-sy" >), $in_same_cat = false, $excluded_categories = '11' <span class = "crayon-sy" >); } else { echo '<a class="arc_nav_new">已最后</a>' <span class = "crayon-sy" >; }?> |
12. 热门标签ajax加载
点击换一换
wordpress二次开发技巧之functions.php篇
03 |
if ( isset( $_GET [ 'action' <span class = "crayon-sy" >])){ |
04 |
if ( $_GET [ 'action' <span class = "crayon-sy" >] == 'tag' <span class = "crayon-h" > ){ |
05 |
echo wp_tag_cloud( 'smallest=10&largest=14&number=32&order=RAND' <span class = "crayon-sy" >); |
11 |
add_action( 'init' <span class = "crayon-sy" >, 'tagLoad' <span class = "crayon-sy" >); |
HTML部分
1 |
<a class = "tag_change" href= "<?php echo get_option('home'<span class=" crayon-sy ">)." /?action=tag "; ?>" >换一换</a> |
使用JS实现点击交互
02 |
$( ".tag_change" ).click( function (){ |
04 |
url: $(this).attr( "href" ), |
05 |
type: 'get' <span class = "crayon-sy" >, |
06 |
beforeSend: function () { |
09 |
error: function (error) { |
12 |
success: function (data) { |
14 |
$( ".tag_content" ). empty ().append($(data).fadeIn(200)); |
13. 外链加上nofollow
防止引入的网站有问题,被降权
02 |
add_filter( 'the_content' , 'cn_nf_url_parse' ); |
03 |
function cn_nf_url_parse( $content ) { |
05 |
$regexp = "<as[^>]*href=(" ??)([^ " >]*?)1[^>]*>" ; |
06 |
if (preg_match_all( "/$regexp/siU" , $content , $matches , PREG_SET_ORDER)) { |
07 |
if ( ! empty ( $matches ) ) { |
09 |
$srcUrl = get_option( 'siteurl' ); |
10 |
for ( $i =0; $i < count ( $matches ); $i ++) |
13 |
$tag = $matches [ $i ][0]; |
14 |
$tag2 = $matches [ $i ][0]; |
15 |
$url = $matches [ $i ][0]; |
19 |
$pattern = '/targets*=s*"s*_blanks*"/' ; |
20 |
preg_match( $pattern , $tag2 , $match , PREG_OFFSET_CAPTURE); |
21 |
if ( count ( $match ) < 1 ) |
22 |
$noFollow .= ' target="_blank" ' ; |
24 |
$pattern = '/rels*=s*"s*[n|d]ofollows*"/' ; |
25 |
preg_match( $pattern , $tag2 , $match , PREG_OFFSET_CAPTURE); |
26 |
if ( count ( $match ) < 1 ) |
27 |
$noFollow .= ' rel="nofollow" ' ; |
29 |
$pos = strpos ( $url , $srcUrl ); |
31 |
$tag = rtrim ( $tag , '>' ); |
32 |
$tag .= $noFollow . '>' ; |
33 |
$content = str_replace ( $tag2 , $tag , $content ); |
39 |
$content = str_replace ( ']]>' , ']]>' , $content ); |
14. 图片懒加载lazyload3. 外链加上nofollow
1 |
function lazyload( $content ) { |
2 |
if (!is_feed()||!is_robots) { |
3 |
$content =preg_replace( '/<img(.+)src=[' "]([^'" ]+)[' "](.*)>/i'," <img $1data -original= "$2" src= "data:image/gif;base64,R0lGODlhAQABAIAAAOHh4QAAACH5BAAAAAAALAAAAAABAAEAQAICRAEAOw==" $3 >n", $content ); |
7 |
add_filter ( 'the_content' , 'lazyload' ); |
JS代码(需引入jquery.lazyload.js)
15. 获取文章中第一张图
如跑马灯图
wordpress二次开发技巧之functions.php篇
02 |
function wpdx_postimage( $atts , $content = null) { |
03 |
extract(shortcode_atts( array ( |
07 |
$images =& get_children( 'post_type=attachment&post_mime_type=image&post_parent=' . get_the_id() ); |
08 |
foreach ( $images as $imageID => $imagePost ) |
09 |
$fullimage = wp_get_attachment_image( $imageID , $size , false); |
10 |
$imagedata = wp_get_attachment_image_src( $imageID , $size , false); |
11 |
$width = ( $imagedata [1]+2); |
12 |
$height = ( $imagedata [2]+2); |
15 |
add_shortcode( "postimage" , "wpdx_postimage" ); |
显示图片
1 |
<a href= "<?php the_permalink(); ?>" target= "_blank" > |
2 |
<?php echo do_shortcode( "[postimage]" ); ?> |
16. 截取摘要
wordpress二次开发技巧之functions.php篇
02 |
function new_excerpt_length( $length ) { |
05 |
add_filter( 'excerpt_length' , 'new_excerpt_length' ); |
08 |
function new_excerpt_more( $more ) { |
11 |
add_filter( 'excerpt_more' , 'new_excerpt_more' ); |
17. 获取文章第一个分类目录
因为一篇文章可能属于多个目录,有些地方只需要输出一个
2 |
function get_first_category(){ |
3 |
$category = get_the_category(); |
5 |
echo '<a class="col_cat" href="' .get_category_link( $category [0]->term_id ). '">' . $category [0]->cat_name. '</a>' ; |
8 |
add_filter( 'get_first_category' , 'get_first_category' ); |
HTML
1 |
<?php get_first_category(); ?> |
18. 分类页获得文章简介
wordpress二次开发技巧之functions.php篇
2 |
function get_category_expert( $length =240){ |
3 |
$content = get_the_content(); |
4 |
$trimmed_content = wp_trim_words( $content , $length , '<a href="' . get_permalink() . '"> [...]</a>' ); |
7 |
add_filter( 'get_category_expert' , 'get_category_expert' ); |
19. 根据页面类型指定每页显示的文章数
02 |
function custom_posts_per_page( $query ){ |
04 |
$query ->set( 'posts_per_page' ,9); |
07 |
$query ->set( 'posts_per_page' ,5); |
10 |
$query ->set( 'posts_per_page' ,-1); |
13 |
$query ->set( 'posts_per_page' ,4); |
16 |
$query ->set( 'posts_per_page' ,9); |
19 |
$query ->set( 'posts_per_page' ,-1); |
23 |
add_action( 'pre_get_posts' , 'custom_posts_per_page' ); |
20. 缩略图
02 |
if ( function_exists( 'add_theme_support' ) )add_theme_support( 'post-thumbnails' ); |
08 |
function dm_the_thumbnail() { |
14 |
if ( has_post_thumbnail() ) { |
16 |
echo '<a class="at_feature" href="' .get_permalink(). '" title="阅读全文">' ; |
18 |
the_post_thumbnail( 'thumbnail' ); |
24 |
$content = $post ->post_content; |
26 |
preg_match_all( '/<img.*?(?: |t|r|n)?src=[' "]?(.+?)['" ]?(?:(?: |t|r|n)+.*?)?>/sim', $content , $strResult , PREG_PATTERN_ORDER); |
28 |
$n = count ( $strResult [1]); |
32 |
$thumb_first = $strResult [1][0]; |
33 |
$thumb_split = strrpos ( $thumb_first , '.' ); |
34 |
$thumb_before = substr ( $thumb_first , 0, $thumb_split ); |
35 |
$thumb_after = substr ( $thumb_first , $thumb_split , strlen ( $thumb_first )); |
37 |
$thumb_before = preg_replace( $reg , "" , $thumb_before ); |
38 |
$thumb_src = $thumb_before . '-215x115' . $thumb_after ; |
39 |
echo '<a class="at_feature" href="' .get_permalink(). '" title="阅读全文"><img class="animated" src="' . $thumb_src . '" alt="缩略图" /></a>' ; |
42 |
$random = mt_rand(0, 19); |
43 |
echo '<a class="at_feature" href="' .get_permalink(). '" title="阅读全文"><img class="animated" src="' .get_bloginfo( 'template_url' ). '/images/thumbnail/default_thumbnail_' . $random . '.jpg" alt="缩略图" /></a>' ; |
显示缩略图
2 |
<?php if (has_post_thumbnail()){ the_post_thumbnail();} ?> |
6 |
<?php dm_the_thumbnail(); ?> |