Title: If Shortcode
Author: geomagas
Published: <strong>2014年3月2日</strong>
Last modified: 2024年8月2日

---

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このプラグインは **WordPress の最新3回のメジャーリリースに対してテストされていま
せん**。もうメンテナンスやサポートがされていないかもしれず、最新バージョンの WordPress
で使用した場合は互換性の問題が発生する可能性があります。

![](https://s.w.org/plugins/geopattern-icon/if-shortcode.svg)

# If Shortcode

 作者: [geomagas](https://profiles.wordpress.org/geomagas/)

[ダウンロード](https://downloads.wordpress.org/plugin/if-shortcode.0.3.0.zip)

 * [詳細](https://ja.wordpress.org/plugins/if-shortcode/#description)
 * [レビュー](https://ja.wordpress.org/plugins/if-shortcode/#reviews)
 *  [インストール](https://ja.wordpress.org/plugins/if-shortcode/#installation)
 * [開発](https://ja.wordpress.org/plugins/if-shortcode/#developers)

 [サポート](https://wordpress.org/support/plugin/if-shortcode/)

## 説明

This plugin provides an [if] shortcode to conditionally render content. The syntax
is the following:

    ```
    [if condition1 condition2=false condition3]{content}[/if]
    ```

Conditions are passed as attribute names. Multiple conditions evaluate to the result
of ORing all of them. In other words, if at least one condition evaluates to the
desired boolean result, {content} is rendered, otherwise it is discarded.
 Attribute
values determine if we want the condition to be true or false. A value of `'0'`,`'
false'`, `''` (the empty string), `'null'` or `'no'` means we expect the condition
to be false. Anything else, including the absense of a value, is interpreted as 
true.

For example, suppose that we want to include a sentence in a post, but only for 
anonymous visitors:

    ```
    [if is_user_logged_in=no]The Sentence.[/if]
    ```

It also provides an [else] shortcode and an [eitherway] one for use inside [if] 
blocks. [else] will render its content if the condition evaluates to false, and [
eitherway] will render its content regardless of the evaluation result.
 When used
outside an [if] block, these shortcodes behave as if the whole content is surrounded
by an [if] shortcode whose condition evaluates to true. In other words, an [else]
shortcode would not render any content, while a [eitherway] one would. You can use
as many of these shortcodes as you like in a single [if] block, which gives you 
the ability to do things like:

    ```
        - Am I logged in?
        [if is_user_logged_in]- Yes you are.
        [else]- No you are not.
        [/else][eitherway]- I'm sorry, what?
        [/eitherway]- I said YOU A-R-E LOGGED IN!!!
        [else]- YOU ARE NOT LOGGED IN!!! What's the matter with you?[/else][/if]
    ```

A multitude of conditions are supported out-of-the-box. The following evaluate to
the result of the corresponding [WordPress Conditional Tag](https://developer.wordpress.org/themes/basics/conditional-tags/),
using the no-parameter syntax:

    ```
        is_single
        is_singular
        is_page
        is_home
        is_front_page
        is_privacy_policy
        is_attachment
        is_category
        is_tag
        is_tax
        is_author
        is_archive
        is_year
        is_month
        is_date
        is_day
        is_time
        is_feed
        is_search
        is_sticky
        is_preview
        has_term
        has_excerpt
        comments_open
        pings_open
        is_404
        is_user_logged_in
        is_super_admin
        is_multi_author
        is_multisite
        is_main_site
        is_child_theme
    ```

For example, the evaluation of the `is_page` condition is equivalent to calling `
is_page()` with no parameter.

### Extending

The functionality of the plugin can be extended by other plugins, by means of adding
custom conditions through filters. To add a custom condition, a filter hook must
be defined in the following manner:

    ```
    add_filter($if_shortcode_filter_prefix.'my_condition','my_condition_evaluator');

    function my_condition_evaluator($value) {
        $evaluate=.... /* add your evaluation code here */
        return $evaluate;
    }
    ```

Then, you can use your custom condition like so:

    ```
    [if my_condition]{content}[/if]
    ```

A big thanks to M Miller for the [`normalize_empty_atts()`](http://wordpress.stackexchange.com/a/123073/39275)
function.

## インストール

Install the plugin using [the usual method described in the codex](https://wordpress.org/documentation/article/manage-plugins/#installing-plugins-1).

## 評価

![](https://secure.gravatar.com/avatar/a9ae342bd77a3304012103d22ffefbe1c20dd162c2b3b3e55b101fb328091a21?
s=60&d=retro&r=g)

### 󠀁[Lifesaver](https://wordpress.org/support/topic/lifesaver-17/)󠁿

 [jivyb](https://profiles.wordpress.org/jivyb/) 2016年12月23日

I needed to show a login form only to people not logged in. This little plugin was
perfect! Now I’m getting all kinds of ideas for what I can do with it. Thanks!

![](https://secure.gravatar.com/avatar/f83127a1d6743502aa12fa843bf9ca18326926a3b86a9a85d2e002e3e8256547?
s=60&d=retro&r=g)

### 󠀁[Just what I was looking for!](https://wordpress.org/support/topic/just-what-i-was-looking-for-260/)󠁿

 [McCarthy-Wood](https://profiles.wordpress.org/mccarthy-wood/) 2016年9月3日

Simple and clean to use!

![](https://secure.gravatar.com/avatar/adcf81f4f102f58505db81fc841246e3d939ab12ee7ed7ef178ecc061fb73346?
s=60&d=retro&r=g)

### 󠀁[Very easy to use](https://wordpress.org/support/topic/very-easy-to-use-173/)󠁿

 [J. Christopher Guritz](https://profiles.wordpress.org/guritz/) 2016年9月3日

If you are wanting to hide or show links or text based upon logged in state, author
or quite a few other “is” conditions this plugin is perfect. Thanks G J

 [ 7件のレビューをすべて表示 ](https://wordpress.org/support/plugin/if-shortcode/reviews/)

## 貢献者と開発者

If Shortcode はオープンソースソフトウェアです。以下の人々がこのプラグインに貢献し
ています。

貢献者

 *   [ geomagas ](https://profiles.wordpress.org/geomagas/)

[“If Shortcode” をあなたの言語に翻訳しましょう。](https://translate.wordpress.org/projects/wp-plugins/if-shortcode)

### 開発に興味がありますか ?

[コードを閲覧](https://plugins.trac.wordpress.org/browser/if-shortcode/)するか、
[SVN リポジトリ](https://plugins.svn.wordpress.org/if-shortcode/)をチェックするか、
[開発ログ](https://plugins.trac.wordpress.org/log/if-shortcode/)を [RSS](https://plugins.trac.wordpress.org/log/if-shortcode/?limit=100&mode=stop_on_copy&format=rss)
で購読してみてください。

## 変更履歴

#### 0.3.0

 * Improvement: Refactored code for PHP 5.4+
 * Addition: Added some more tags

#### 0.2.1

 * Improvement: Removed unnecessary closure from line 87 ([thanks datacate](https://wordpress.org/support/topic/installation-error-84)!)

#### 0.2.0

 * Addition: [else] shortcode
 * Addition: [eitherway] shortcode

#### 0.1.0

 * First release.

## メタ

 *  バージョン **0.3.0**
 *  最終更新日 **2年前**
 *  有効インストール数 **200+**
 *  WordPress バージョン ** 3.0.1またはそれ以降 **
 *  検証済み最新バージョン: **6.6.5**
 *  PHP バージョン ** 5.4またはそれ以降 **
 *  言語
 * [English (US)](https://wordpress.org/plugins/if-shortcode/)
 * タグ
 * [conditional](https://ja.wordpress.org/plugins/tags/conditional/)[conditional-tags](https://ja.wordpress.org/plugins/tags/conditional-tags/)
   [else](https://ja.wordpress.org/plugins/tags/else/)[if](https://ja.wordpress.org/plugins/tags/if/)
   [shortcode](https://ja.wordpress.org/plugins/tags/shortcode/)
 *  [詳細を表示](https://ja.wordpress.org/plugins/if-shortcode/advanced/)

## 評価

 5つ星中5つ星

 *  [  6 5-星レビュー     ](https://wordpress.org/support/plugin/if-shortcode/reviews/?filter=5)
 *  [  0 4-星レビュー     ](https://wordpress.org/support/plugin/if-shortcode/reviews/?filter=4)
 *  [  0 3-星レビュー     ](https://wordpress.org/support/plugin/if-shortcode/reviews/?filter=3)
 *  [  0 2-星レビュー     ](https://wordpress.org/support/plugin/if-shortcode/reviews/?filter=2)
 *  [  0 1-星レビュー     ](https://wordpress.org/support/plugin/if-shortcode/reviews/?filter=1)

[Your review](https://wordpress.org/support/plugin/if-shortcode/reviews/#new-post)

[すべてのレビューを見る](https://wordpress.org/support/plugin/if-shortcode/reviews/)

## 貢献者

 *   [ geomagas ](https://profiles.wordpress.org/geomagas/)

## サポート

意見や質問がありますか ?

 [サポートフォーラムを表示](https://wordpress.org/support/plugin/if-shortcode/)

## 寄付

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