get_option()函数详解

get_option()函数,实际上我们在整合后台功能的时候经常会用到的一个函数,主要用来从 WordPress 博客数据库wp_options表中取得我们想要的字段内容的一个函数。

语法结构

<?php echo get_option( $option, $default ); ?>

参数:

$option (string) (必选)获取选项的名称,只允许下划线分隔的小写字母组合,如show或者show_id形式,默认值none。
$default(mixed) (可选)如果不存在并且设置了默认值的话就返回默认值,否则返回默认False

部分配置属性列表(配置属性表大全

admin_email – 网站的管理员邮件地址
blogname – 网站的站点名称
blogdescription – 网站的站点副标题
blog_charset – 站点的字符编码集
date_format – 默认的时间格式
default_category – 默认的文章分类
template – 当前设置的主题名称
posts_per_page – 单页显示的最大文章数

<?php echo get_option("wpxk", "WordPress"); 
//如果wp_option表中没有wpxk这条记录,就默认返回“WordPress” ?>
//将博客名称显示在<h1>标签中
<h1><?php echo get_option( 'blogname' ); ?></h1>
//显示站点正在使用的编码(比如:UTF-8)
<p>Character set: <?php echo get_option( 'blog_charset' ); ?> </p>
博客管理员的邮件地址,并将它存在变量中。
<?php $admin_email = get_option( 'admin_email' ); ?>

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Discussion

blacklist_keys 

When a comment contains any of these words in its content, name, URL, e-mail, or IP, it will be marked as spam. One word or IP per line. It will match inside words, so "press" will match "WordPress."

Default: NULL

Data type: String (possibly multi-line)

comment_max_links 

Hold a comment in the queue if it contains the value of this option or more.

Default: 2

Data type: Integer

comment_moderation 

Before a comment appears, an administrator must always approve the comment.

1 : Yes

0 : False (default)

Data type: Integer

comments_notify 

E-mail me when anyone posts a comment.

1 : Yes (default)

0 : No

Data type: Integer

default_comment_status 

Allow comments (can be overridden with individual posts)

open : Allow comments (default)

closed : Disallow comments

Data type: String

default_ping_status 

Allow link notifications from other blogs (pingbacks and trackbacks).

open : Allow pingbacks and trackbacks from other blogs (default)

closed : Disallow pingbacks and trackbacks from other blogs

Data type: String

default_pingback_flag 

Attempt to notify any blogs linked to from the article (slows down posting).

1 : Yes (default)

0 : No

Data type: Integer

moderation_keys 

When a comment contains any of these words in its content, name, URL, e-mail, or IP, it will be held in the moderation queue. One word or IP per line. It will match inside words, so "press" will match "WordPress."

Default: NULL

Data type: String (possibly multi-line)

moderation_notify 

E-mail me when a comment is held for moderation.

1 : Yes (default)

0 : No

Data type: Integer

require_name_email 

Before a comment appears, the comment author must fill out his/her name and email.

1 : Yes (default)

0 : No

Data type: Integer

thread_comments 

Enable WP-native threaded (nested) comments.

1 : Yes

0 : No (default)

Data type: Integer

thread_comments_depth 

Set the number of threading levels for comments.

1 thru 10 : levels

Default: 5

Data type: Integer

show_avatars

Avatar Display

1 : (default) Show Avatars

0 : Do not show Avatars

Data type: Integer

avatar_rating

Maximum Rating

G : (default) Suitable for all audiences

PG : Possibly offensive, usually for audiences 13 and above

R : Intended for adult audiences above 17

X : Even more mature than above

Data type: String

avatar_default

Default Avatar

mystery : (default) Mystery Man

blank : Blank

gravatar_default : Gravatar Logo

identicon : Identicon (Generated)

wavatar : Wavatar (Generated)

monsterid : MonsterID (Generated)

retro : Retro (Generated)

Data type: String

close_comments_for_old_posts

Automatically close comments on old articles

1 : Yes

0 : No (default)

Data type: Integer

close_comments_days_old

Automatically close comments on articles older than x days

Default: 14

Data type: Integer

show_comments_cookies_opt_in

Show the cookies opt-in checkbox on the comment form and enable comment cookies

1 : Yes (default as of 4.9.8)

0 : No

Data type: Integer

page_comments

Break comments into pages

1 : Yes (default)

0 : No

Data type: Integer

comments_per_page

Default: 50

Data type: Integer

default_comments_page

Default: 'newest'

Data type: String

comment_order

asc : (default)

desc :

Data type: String

comment_whitelist

Comment author must have a previously approved comment

1 : Yes (default)

0 : No

Data type:

General

admin_email 

Administrator email

Default: 'you@example.com'

Data type: String

blogdescription 

Blog tagline

Default: '__('Just another WordPress weblog')'

Data type: String

blogname 

Blog title

Default: '__('My Blog')'

Data type: String

comment_registration 

Users must be registered and logged in to comment

1 : Yes

0 : No (default)

Data type: Integer

date_format 

Default date format (see Formatting Date and Time)

Default: '__('F j, Y')'

Data type: String

default_role 

The default role of users who register at the blog.

subscriber : (default)

administrator :

editor :

author :

contributor :

Data type: String

gmt_offset 

Times in the blog should differ by this value.

-6 : GMT -6 (aka Central Time, USA)

0 : GMT (aka Greenwich Mean Time)

Default: date('Z') / 3600

Data type: Integer

home 

Blog address (URL)

Default: wp_guess_url()

Data type: String (URI)

siteurl 

WordPress address (URL)

Default: wp_guess_url()

Data type: String (URI)

start_of_week 

The starting day of the week.

0 : Sunday

1 : Monday (default)

2 : Tuesday

3 : Wednesday

4 : Thursday

5 : Friday

6 : Saturday

Data type: Integer

time_format 

Default time format (see Formatting Date and Time)

Default: '__('g:i a')'

Data type: String

timezone_string

Timezone

Default: NULL

Data type: String

users_can_register 

Anyone can register

1 : Yes

0 : No (default)

Data type: Integer

Links

links_updated_date_format

Default: '__('F j, Y g:i a')'

Data type: String

links_recently_updated_prepend

Default: ''

Data type: String

links_recently_updated_append

Default: ''

Data type: String

links_recently_updated_time

Default: 120

Data type: Integer

Media

thumbnail_size_w

Default: 150

Data type: Integer

thumbnail_size_h

Default: 150

Data type: Integer

thumbnail_crop

Crop thumbnail to exact dimensions (normally thumbnails are proportional)

1 : Yes (default)

0 : No

Data type: Integer

medium_size_w

Default: 300

Data type: Integer

medium_size_h

Default: 300

Data type: Integer

large_size_w

Default: 1024

Data type: Integer

large_size_h

Default: 1024

Data type: Integer

embed_autourls

Attempt to automatically embed all plain text URLs

Default: 1

Data type: Integer

embed_size_w

Default: NULL

Data type: Integer

embed_size_h

Default: 600

Data type: Integer

Miscellaneous

hack_file 

Use legacy my-hacks.php file support

1 : Yes

0 : No (default)

Data type: Integer

html_type 

Default MIME type for blog pages (text/html, text/xml+html, etc.)

Default: 'text/html'

Data type: String (MIME type)

secret 

Secret value created during installation used with salting, etc.

Default: wp_generate_password(64)

Data type: String (MD5)

upload_path 

Store uploads in this folder (relative to the WordPress root)

Default: NULL

Data type: String (relative path)

upload_url_path 

URL path to upload folder (will be blank by default - Editable in All Settings Screen.

Data type: String (URL path)

uploads_use_yearmonth_folders 

Organize my uploads into month- and year-based folders

1 : Yes (default)

0 : No (default for safe mode)

Data type: Integer

use_linksupdate 

Track links' update times

1 : Yes

0 : No (default)

Data type: Integer

Permalinks

permalink_structure 

The desired structure of your blog's permalinks. Some examples:

/%year%/%monthnum%/%day%/%postname%/ : Date and name based

/archives/%post_id%/ : Numeric

/%postname%/ : Post name-based

You can see more examples by viewing Using Permalinks.

Default: NULL

Data type: String

category_base

The default category base of your blog categories permalink.

Default: NULL

Data type: String

tag_base

The default tag base for your blog tags permalink.

Default: NULL

Data type: String

Privacy

blog_public

1 : I would like my blog to be visible to everyone, including search engines (like Google, Sphere, Technorati) and archivers. (default)

0 : I would like to block search engines, but allow normal visitors.

Data type: Integer

Reading

blog_charset 

Encoding for pages and feeds. The character encoding you write your blog in (UTF-8 is recommended).

Default: 'UTF-8'

Data type: String

gzipcompression 

WordPress should compress articles (with gzip) if browsers ask for them.

1 : Yes

0 : No (default)

Data type: Integer

page_on_front 

The ID of the page that should be displayed on the front page. Requires show_on_front's value to be page.

Data type: Integer

page_for_posts 

The ID of the page that displays posts. Useful when show_on_front's value is page.

Data type: Integer

posts_per_page 

Show at most x many posts on blog pages.

Default: 10

Data type: Integer

posts_per_rss 

Show at most x many posts in RSS feeds.

Default: 10

Data type: Integer

rss_language 

Language for RSS feeds (metadata purposes only)

Default: 'en'

Data type: String (ISO two-letter language code)

rss_use_excerpt 

Show an excerpt instead of the full text of a post in RSS feeds

1 : Yes

0 : No (default)

Data type: Integer

show_on_front 

What to show on the front page

posts : Your latest posts (default)

page : A static page (see page_on_front)

Data type: String

Themes

template 

The slug of the currently activated theme (how it is accessed by path, ex. /wp-content/themes/some-theme: some-theme would be the value)

Default: 'default'

Data type: String

stylesheet 

The slug of the currently activated stylesheet (style.css) (how it is accessed by path, ex. /wp-content/themes/some-style: some-style would be the value)

Default: 'default'

Data type: String

Writing

default_category 

ID of the category that posts will be put in by default

Default: 1

Data type: Integer

default_email_category 

ID of the category that posts will be put in by default when written via e-mail

Default: 1

Data type: Integer

default_link_category 

ID of the category that links will be put in by default

Default: 2

Data type: Integer

default_post_edit_rows 

Size of the post box (in lines)

Default: 10

Data type: Integer

mailserver_login 

Mail server username for posting to WordPress by e-mail

Default: 'login@example.com'

Data type: String

mailserver_pass 

Mail server password for posting to WordPress by e-mail

Default: 'password'

Data type: String

mailserver_port 

Mail server port for posting to WordPress by e-mail

Default: 110

Data type: Integer

mailserver_url 

Mail server for posting to WordPress by e-mail

Default: 'mail.example.com'

Data type: String

ping_sites 

When you publish a new post, WordPress automatically notifies the following site update services. For more about this, see Update Services. Separate multiple service URLs with line breaks. Requires blog_public to have a value of 1.

Default: 'http://rpc.pingomatic.com/'

Data type: String (possibly multi-line)

use_balanceTags 

Correct invalidly-nested XHTML automatically

1 : Yes

0 : No (default)

Data type: Integer

use_smilies 

Convert emoticons like 🙂 and 😛 to graphics when displayed

1 : Yes (default)

0 : No

Data type: Integer

use_trackback 

Enable sending and receiving of trackbacks

1 : Yes

0 : No (default)

enable_app

Enable the Atom Publishing Protocol

1 : Yes

0 : No (default)

Data type: Integer

enable_xmlrpc

Enable the WordPress, Movable Type, MetaWeblog and Blogger XML-RPC publishing protocols

1 : Yes

0 : No (default)

Data type: Integer

Uncategorized

active_plugins 

Returns an array of strings containing the path of the main php file of the plugin. The path is relative to the plugins folder. An example of path in the array : 'myplugin/mainpage.php'.

Default: array()

Data type: Array

advanced_edit

Default: 0

Data type: Integer

recently_edited

Default: NULL

Data type:

image_default_link_type

Default: 'file'

Data type: 'file', 'none'

image_default_size

Default: NULL

Data type: 'thumbnail', 'medium', 'large' or Custom size: https://codex.wordpress.org/Function_Reference/add_image_size

image_default_align

Default: NULL

Data type: 'left', 'right', 'center', 'none'

sidebars_widgets 

Returns array of sidebar states (list of active and inactive widgets).

Default:

Data type: Array

sticky_posts

Default: array()

Data type:

widget_categories

Default: array()

Data type:

widget_text

Default: array()

Data type:

widget_rss

Default: array()

Data type:

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