Function Reference/is plugin active

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Description

Checks if a plugin is activated.

NOTE: defined in wp-admin/includes/plugin.php, so this is only available from within the admin pages, and any references to this function must be hooked to admin_init or a later action. If you want to use this function from within a template, you will need to manually require plugin.php, an example is below.

Usage

In the Admin Area: %%%<?php is_plugin_active($plugin) ?>%%% In the front end, in a theme, etc... %%%<?php include_once( ABSPATH . 'wp-admin/includes/plugin.php' ); ?> <?php is_plugin_active($plugin) ?>%%%

Parameters

tt$plugin/tt
(string) (required) The name of the plugin sub-directory/file.
Default: Nonenoinclude

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Notes

This template is for standardizing how parameters look in the Function Reference and in Template Tags. Here is an example of this template being called: prenowiki检查到模板循环:模板:Parameter/nowiki/pre 检查到模板循环:模板:Parameter

The usage of this template is below: prenowiki检查到模板循环:模板:Parameter/nowiki/pre Let's take a closer look at the parameters..

name
The name of the parameter.
datatype
The datatype that should be given for this parameter when called.
  • string
  • integer
  • boolean
  • mixed
description
A short description of the parameter.
importance
Set this parameter to optional if the parameter is optional. Otherwise, do not declare this parameter—it defaults to required.
  • required
  • optional
default
If this parameter is optional, ttdefault/tt is the value that will be used if the parameter is not declared.

wordpress.org.cn /div /noinclude

Return Values

True
if plugin is activated, else false.

Examples

%%%<?php

  If (is_plugin_active('plugin-directory/plugin-file.php')) {
     //plugin is activated
  }

?>%%%

Change Log

Since Version 2.5

Source File

is_plugin_active() is defined in onlyincludecodewp-admin/includes/plugin.php/code/onlyinclude

div class=template-description style=padding: 0 1.5em; border: 1px solid #eeeeee; background-color: #f9f9f9

Template Description

Link to the source code on http://core.trac.wordpress.org/browser/.

Parameters

  1. filename
  2. (option) path to codetag/code (version) or codetrunk/code. This option is only used for a new function.br /Default: codetrunk/code -- trunk is the latest bleeding edge development version of WordPress.

Usage

Link to the stable version: pre检查到模板循环:模板:Trac/pre

Link to trunk: pre检查到模板循环:模板:Trac/pre

/div

wordpress.org.cn.

Related

Conditional Tags: comments_open(), is_local_attachment(), is plugin active(), is_404(), is_admin(), is_archive(), is_attachment(), is_author(), is_category(), is_comments_popup(), is_date(), is_day(), is_feed(), is_front_page(), is_home(), is_month(), is_new_day(), is_page(), is_page_template(), is_paged(), is_plugin_page(), is_preview(), is_search(), is_single(), is_singular(), is_sticky(), is_tag(), is_tax(), is_taxonomy_hierarchical(), is_time(), is_trackback(), is_year(), in_category(), in_the_loop(), is_active_sidebar(), is_active_widget(), is_blog_installed(), is_dynamic_sidebar(), is_user_logged_in(), has_excerpt(), has_post_image(), has_tag(), pings_open(), post_type_exists(), taxonomy_exists(), term_exists(), username exists() includeonlydiv style=clear:both; background-color:#F7F7F7; border:1px solid #CCCCCC; color:#000000; padding:7px; margin:0.5em auto 0.5em auto; vertical-align:middle;See also index of Function Reference and index of Template Tags./div/includeonlynoinclude

Description

This Template is used by Codex:Template Messages.

Usage

pre 检查到模板循环:模板:Message /pre

Result

检查到模板循环:模板:Message

/noinclude