Title: If Modified Since
Author: ezraverheijen
Published: <strong>17 آگوست 2015</strong>
Last modified: 17 آگوست 2015

---

جستجوی افزونه‌ها

این افزونه **با ۳ نگارش عمدهٔ اخیر وردپرس آزمایش نشده است**. ممکن است دیگر نگهداری
یا پشتیبانی نشود و هنگام استفاده با نگارش‌های تازه‌تر وردپرس مشکل سازگاری داشته 
باشد.

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

# If Modified Since

 توسط [ezraverheijen](https://profiles.wordpress.org/ezraverheijen/)

[دانلود](https://downloads.wordpress.org/plugin/if-modified-since.0.9.zip)

 * [جزئیات](https://fa.wordpress.org/plugins/if-modified-since/#description)
 * [نقد و بررسی‌ها](https://fa.wordpress.org/plugins/if-modified-since/#reviews)
 *  [نصب](https://fa.wordpress.org/plugins/if-modified-since/#installation)
 * [توسعه](https://fa.wordpress.org/plugins/if-modified-since/#developers)

 [پشتیبانی](https://wordpress.org/support/plugin/if-modified-since/)

## توضیحات

If Modified Since tells search engine spiders one of two things about a webpage:

 * This webpage has not changed, no need to download again.
 * This webpage has changed so download again because there is new information.

If the requested page has not been modified since the time specified by a search
engine spider, a 304 (not modified) response will be returned without any message-
body.

If you have any issues using If Modified Since, find a bug or have an idea to make
the plugin even better then please [help to improve If Modified Since](https://github.com/ezraverheijen/wp-if-modified-since).

If you don’t report it, I can’t fix it!

## نصب

 1. Upload the `if-modified-since` folder to the `/wp-content/plugins/` directory
 2. Activate the plugin through the ‘Plugins’ menu in WordPress
 3. No need to configure, it just works!

## سوالات متداول

  Do I need this when I already use a caching plugin like W3 Total Cache?

Some plugins like W3TC support the If-Modified-Since header, so there’s no need 
to install this plugin.

  How do I know if the plugin works after installing?

You can test If Modified Since [here](https://varvy.com/tools/if-modified/)

## نقد و بررسی‌ها

![](https://secure.gravatar.com/avatar/a9e1c3b02a34fa228a8b06bc21c3ddf019f45078129cae10f8bd0e474aaef4db?
s=60&d=retro&r=g)

### 󠀁[Breaks sites, empty blank pages for normal visitors](https://wordpress.org/support/topic/breaks-sites-empty-blank-pages-for-normal-visitors/)󠁿

 [amityweb](https://profiles.wordpress.org/amityweb/) 13 سپتامبر 2018 1 پاسخ

This plugin caused our site to show blank pages often. The site would initially 
work, then after a reload it was completely blank. No errors or anything. The theme
files failed to load, just completely blank. After investigation it turned out to
be this plugin. Possibly broken due to be being so old. This description should 
scare you off anyway which I should guess what was happening to normal users: “If
the requested page has not been modified since the time specified by a search engine
spider, a 304 (not modified) response will be returned without any message-body”

![](https://secure.gravatar.com/avatar/5c9f90d4afcd330f8e303dae3d483865c423b4731de5e880e198cabc91464850?
s=60&d=retro&r=g)

### 󠀁[Deserves a 5 star](https://wordpress.org/support/topic/deserves-a-5-star/)󠁿

 [Jayanta](https://profiles.wordpress.org/jkmwp/) 3 سپتامبر 2016

Yes, it works. thanks a lot, man. I have been trying to fix it for 3 hours now and
your plugin has made it look so easy.

![](https://secure.gravatar.com/avatar/e2cd8591ee5454dbadd17260dfb625e47675057ef435bf32698de5a75112d12a?
s=60&d=retro&r=g)

### 󠀁[Great!](https://wordpress.org/support/topic/great-4580/)󠁿

 [klinsky](https://profiles.wordpress.org/klinsky/) 3 سپتامبر 2016

Simple and elegant script code. I checked – it stable works! The Author thanks!

 [ خواندن تمامی 3 نقد و بررسی‌ ](https://wordpress.org/support/plugin/if-modified-since/reviews/)

## توسعه دهندگان و همکاران

“If Modified Since” نرم افزار متن باز است. افراد زیر در این افزونه مشارکت کرده‌اند.

مشارکت کنندگان

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

[ترجمه “If Modified Since” به زبان شما.](https://translate.wordpress.org/projects/wp-plugins/if-modified-since)

### علاقه‌ مند به توسعه هستید؟

[کد را مرور کنید](https://plugins.trac.wordpress.org/browser/if-modified-since/)،
[مخزن SVN](https://plugins.svn.wordpress.org/if-modified-since/) را بررسی کنید، 
یا از طریق [RSS](https://plugins.trac.wordpress.org/log/if-modified-since/?limit=100&mode=stop_on_copy&format=rss)
در [گزارش توسعه](https://plugins.trac.wordpress.org/log/if-modified-since/) مشترک
شوید.

## گزارش تغییرات

#### 0.9

 * Beta release

## اطلاعات

 *  نگارش **0.9**
 *  آخرین به‌روزرسانی **11 سال پیش**
 *  نصب‌های فعال **1,000+**
 *  نگارش وردپرس ** 3.5 یا بالاتر **
 *  آزمایش‌شده تا **4.2.39**
 *  زبان
 * [English (US)](https://wordpress.org/plugins/if-modified-since/)
 * برچسب
 * [if-modified-since](https://fa.wordpress.org/plugins/tags/if-modified-since/)
   [seo](https://fa.wordpress.org/plugins/tags/seo/)
 *  [نمایش پیشرفته](https://fa.wordpress.org/plugins/if-modified-since/advanced/)

## امتیازها

 3.7 از 5 ستاره.

 *  [  امتیاز 2 5-ستاره     ](https://wordpress.org/support/plugin/if-modified-since/reviews/?filter=5)
 *  [  امتیاز 0 4-ستاره     ](https://wordpress.org/support/plugin/if-modified-since/reviews/?filter=4)
 *  [  امتیاز 0 3-ستاره     ](https://wordpress.org/support/plugin/if-modified-since/reviews/?filter=3)
 *  [  امتیاز 0 2-ستاره     ](https://wordpress.org/support/plugin/if-modified-since/reviews/?filter=2)
 *  [  امتیاز 1 1-ستاره     ](https://wordpress.org/support/plugin/if-modified-since/reviews/?filter=1)

[بررسی شما](https://wordpress.org/support/plugin/if-modified-since/reviews/#new-post)

[مشاهدهٔ همهٔ بررسی‌ها](https://wordpress.org/support/plugin/if-modified-since/reviews/)

## مشارکت کنندگان

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

## پشتیبانی

چیزی برای گفتن دارید؟ نیاز به کمک دارید؟

 [مشاهده انجمن پشتیبانی](https://wordpress.org/support/plugin/if-modified-since/)

## کمک مالی

آیا تمایل دارید از پیشرفت این افزونه حمایت کنید؟

 [ کمک مالی به این افزونه ](http://bit.ly/1eC8iDE)