Trusted WordPress tutorials, when you need them most.
Beginner’s Guide to WordPress
WPBカップ
25 Million+
Websites using our plugins
16+
Years of WordPress experience
3000+
WordPress tutorials
by experts

修正: WordPressのメモリ不足エラー – PHPのメモリを増やす

編集メモ: WPBeginner のパートナーリンクから手数料を得ています。手数料は編集者の意見や評価に影響を与えません。編集プロセスについて詳しく知る。

WordPressで許容メモリサイズ不足のエラーメッセージが表示されますか?

これはWordPressで最もよく見られるエラーのひとつで、WordPressのPHPメモリ制限を増やすことで簡単に解決できます。

この投稿では、PHPのメモリ制限を増やすことによってWordPressのメモリを使い果たしたエラーを修正する方法を紹介します。

Fix: WordPress Memory Exhausted Error – Increase PHP Memory

WordPress Memory Exhausted Errorとは?

WordPressのメモリを使い果たしたエラーは、あなたのサイトがタスクを実行するのに苦労している場合に表示される可能性のあるメッセージです。

WordPressはサーバーサイドのプログラミング言語であるPHPを使ってビルトインされており、実行にはメモリが必要です。

他のコンピューターと同じように、ウェブサーバーも複数のアプリケーションを同時に実行するためのメモリ量には限りがあります。WordPressホスティングサービスプロバイダーは、PHPを含むさまざまなアプリケーションに特定のメモリサイズを割り当てます。

WordPressコードが初期設定より多くのメモリを必須とする場合、このエラーメッセージが表示されます:

致命的なエラー:許容メモリサイズ 33554432 バイトを使い果たしました(2348617 バイトを割り当てようとしました) in /home4/xxx/public_html/wp-includes/plugin.php on line xxx

Memory exhausted error displayed on a WordPress site

WordPressサイトがサーバーメモリを使い果たしている可能性があります:

  • 画像、動画、その他のメディアの数々
  • 未使用のWordPressプラグインが豊富
  • ホスティングプランのリソースを使い果たした

初期設定では、WordPressはPHPのメモリ制限が64MB未満の場合、自動的に増やそうとします。しかし、64MBでは十分でないことがよくあります。

とはいえ、WordPressのPHPメモリ制限を簡単に増やして、メモリ不足エラーを回避する方法を見てみよう。

チュートリアルのナビゲーションには、以下のクイックリンクをご利用ください:

注: これらの方法の中には、WordPressファイルを直接編集する必要があるものもあります。エラーの発生を防ぐため、まずサイトをバックアップすることをお勧めします。

設定1:wp-config.phpファイルの編集

まず、WordPressサイトのwp-config.phpファイルを編集する必要があります。これは、ルート・ディレクトリにあるWordPressのコア・ファイルのひとつで、通常はpublic_htmlという名前になっています。

FileZillaのようなFTPクライアント、またはウェブホスティングサービスコントロールパネルのファイルマネージャを使用する必要があります。

次に、次の行をwp-config.phpファイルの「すべてです、編集を中止してください」という行の直前に貼り付ける必要があります!それでは、よいブログを。

define( 'WP_MEMORY_LIMIT', '256M' );

このコードはWordPressにPHPのメモリ制限を256MBに増やすように指示します。

詳しくは、wp-config.phpファイルの見つけ方と編集方法のステップバイステップガイドをご覧ください。

完了したら、変更を保存し、wp-config.phpファイルをサーバーにアップロードする必要があります。

これでWordPressサイトにアクセスできるようになり、メモリ枯渇エラーは消えているはずです。

設定2:.htaccessファイルの編集

次の方法は、.htaccessファイルを編集することです。このファイルもWordPressサイトのルート・フォルダーにあります。

ここで、#END WORDPRESSと書かれた行の前に以下のコードを貼り付ける必要があります。

php_value memory_limit 256M

前のコードと同様に、WordPressにPHPのメモリ制限を256MBに増やすように指示します。

その後、変更を保存し、ファイルをWebサーバーにアップロードしてください。これで、WordPressサイトをもう一度開いて、メモリ制限エラーがなくなっているかどうかを確認することができます。

.htaccessファイルが見つからない場合は、.htaccessファイルが見つからない理由と見つける方法についてのガイドをご覧ください。

設定3:php.iniファイルをチェックする

上記の方法でうまくいかない場合は、php.iniファイルを見てください。

php.iniは、PHPのバージョンやPHPスクリプトなど、PHPの設定をコントロールするファイルです。通常はホスティングサービスが管理しているため、WordPressのコアファイルではありません。

PHPのメモリ使用量の上限を確認するには、そのコードをチェックすることができます。詳しくは、php.iniファイルの見つけ方と編集方法をご覧ください。

しかし、これは高度な方法なので、代わりにホスティングサービスのサポートチームに連絡して、WordPressのメモリ制限を手動で増やせるかどうか確認することをお勧めします。そうしないと、さらなるエラーが発生する可能性があります。

詳しくは、WordPressサポートの正しい依頼方法をご覧ください。

オプション4:WordPressホスティングサービスのアップグレード状況

定数メモリ枯渇エラーに遭遇している場合、それはあなたのサイトが現在のホスティングプランを使い果たしたサインかもしれません。

サイトへの訪問者が増え、コンテンツが追加されるにつれ、円滑に機能するためにはより多くのリソースが必須となります。メモリ割り当ての多いプランにアップグレードすれば、恒久的な解決策となります。

以下の場合は、WordPressホスティングサービスのアップグレードをご検討ください:

  • これまでの解決策を試しても、エラーが消えない。
  • あなたのサイトのトラフィックやコンテンツが大幅に増加しました。
  • より多くのリソースを必須とする機能や特徴の追加を計画している。

Bluehostは、あなたのサイトのニーズに応じて拡張することができ、手頃な価格と信頼性の高いWordPressホスティングサービスプランを提供しています。彼らは特にWordPressに最適化されたユーザーフレンドリーなプラットフォームを提供し、それはあなたのサイトを管理することが容易になります。

あなたは私たちのBluehostのクーポンコードを使用する場合は、最初の購入の61%オフまで得ることができます。ちょうどそれを得るために下のボタンをクリックします:

Bluehost offer for WPBeginner readers

WordPressのメモリを使い果たさない方法

WordPressのメモリを使い果たしたエラーを修正した後は、再発を防ぐための予防策をご紹介します:

この投稿が、PHPのメモリ制限を増やすことでWordPressのメモリを使い果たしたエラーを解決するのにお役に立てば幸いです。WordPressエラーのトラブルシューティングのステップバイステップのビギナーズガイドや、サイトを成長させる最高のWordPressプラグインのエキスパートピックもご覧ください。

If you liked this article, then please subscribe to our YouTube Channel for WordPress video tutorials. You can also find us on Twitter and Facebook.

情報開示 私たちのコンテンツは読者支援型です。これは、あなたが私たちのリンクの一部をクリックした場合、私たちはコミッションを得ることができることを意味します。 WPBeginnerの資金源 をご覧ください。3$編集プロセスをご覧ください。

Avatar

Editorial Staff at WPBeginner is a team of WordPress experts led by Syed Balkhi with over 16 years of experience in WordPress, Web Hosting, eCommerce, SEO, and Marketing. Started in 2009, WPBeginner is now the largest free WordPress resource site in the industry and is often referred to as the Wikipedia for WordPress.

究極のWordPressツールキット

ツールキットへの無料アクセス - すべてのプロフェッショナルが持つべきWordPress関連製品とリソースのコレクション!

Reader Interactions

464件のコメント返信を残す

  1. Syed Balkhi says

    Hey WPBeginner readers,
    Did you know you can win exciting prizes by commenting on WPBeginner?
    Every month, our top blog commenters will win HUGE rewards, including premium WordPress plugin licenses and cash prizes.
    You can get more details about the contest from here.
    Start sharing your thoughts below to stand a chance to win!

  2. Vennh says

    This Worked for me.

    /**This is a test for memory*/
    define(‘WP_MEMORY_LIMIT’, ’64M’);

    Thank you for this wonderful share.

  3. Lu says

    Should the memory limit ever be higher than 64M? Most WP sites i’ve worked on the average page load never exceeds 40-5megs. The reason I ask, is I read that the WP_MEMORY_LIMIT defines the amount of memory WordPress can use per Apache thread. Which means that multiple threads will use more and more, and eventually swap to disk which is never good.

    Anybody an expert and can answer this?

  4. WPBeginner Staff says

    It seems like WordPress is either unable to create wp-config.php file or the file gets deleted after the install. Use ftp to make sure that there is a wp-config.php file present on your site. If not then try creating one by renaming the wp-config-sample.php file to wp-config.php file. You will need to manually edit the file and provide your database information.

      • aiyeboy says

        if i locate it on an ftp, and i click on it, it brings it like a download file, pls help with a full guide on how to do it pls my site is going down everyday…

        • tony leon says

          don’t double click it. Either right click and select EDIT or highlight it and look for an EDIT button somewhere (maybe at the top if it’s Godaddy). Good Luck!

  5. LJ LaValle says

    I opened the wp-config.php file from my ftp directory.
    I was not sure how to completely enter the adjustment – I didn’t know basic coding for php, so I just copied the basic precursors shown for each entry and added as follows:

    /**This is a test for memory*/
    define(‘WP_MEMORY_LIMIT’, ’64M’);

    It worked!

  6. Doug says

    Thank you!!! This fixed a problem I created myself and saved having to pay someone at the hosting company to update the file.

  7. kim says

    I am getting this exact error but I am not sure how to get into do I get into wp-config.php which is located in the root WordPress directory as I don’t know where to find it. Yes I am a complete beginner. Can you help?

    Fatal error: Allowed memory size of 33554432 bytes exhausted (tried to allocate 122880 bytes) in /home/crooked1/public_html/wp-includes/SimplePie/Sanitize.php on line 331

  8. mike .levine says

    Thank you so much!! For real.. you have been a lifesaver. I can’t tell you how appreciative I am for your help.

  9. Timothy says

    Hi,

    I’ve tried to increase the limit to 64mb, and I got this warning until 5 times:

    ‘WARNING: Job restart due to inactivity for more than 5 minutes.’

    The database backup is stopped until 60s%, and the result is below when it tried to upload to Dropbox:

    ‘ERROR: Uploaded file size and local file size don’t match.’

    What’s wrong with it? I’m using Bluehost.

    Thanks!

    PS: I’m not a technical person, so give explanation in details :-)

  10. Thomas Cole says

    Been having a doozy of a time working on my site and I would sacrifice a MacBook at midnight to get my site working, one little line of code and we are back up. Thanks!

  11. Jonni says

    Thank you so much!!!!
    I’m in the middle of a launch and all of a sudden I couldn’t update or create any web pages on the whole site because of a 500 Internal Server Error. (And of course this happened as soon as I discovered the Home page had a big problem.)

    Could get no help from support, am not a web developer.

    Yet I was STILL able to follow your instructions and Hallelujah! Miracle of Miracles! Everything works now.

    All this work driving traffic, getting new people to the site – almost wasted due to server error – but Disaster Averted! you saved the day.

    My sincerest gratitude.

    Again, can’t thank you enough.

  12. Casey Friday says

    Thanks so much! I was about to bitch to WooThemes that their $129 extension was breaking my site, but it turned out to be a memory issue. Cheers!

  13. Adrian says

    On line 36/37 of wordpress, wp-config.php you must type:

    /** Memory Limit */
    define(‘WP_MEMORY_LIMIT’, ’64M’);

    For me this problem is solve thi way. You can change 64M with what value you want.

    • Adam Singer says

      This comment is sooo key!

      You have to add define( ‘WP_MEMORY_LIMIT’, ’64M’ ); just before the unique key and salts are defined, otherwise the change doesn’t take effect. Thanks!!!

      • omniafausta says

        yesssss thanks, I was wondering why it didn’t work for me. It was because so far no one told me WHERE in the wp-config i had to add this line. THANKS!!!

    • Rosie Taylor says

      Thank you for clarifying this step. Now I know why it never just changing the other line for the value didn’t work before. This saved me big time for a client tonight!

  14. Titel says

    Hello,
    Today I had a problem with wordpress: after I logged appeared “white screen of death”. We went into cpanel and inserted “define (‘WP_MEMORY_LIMIT’, ’64M ‘)’ in wp-config.php and everything went very well.
    Thanks a lot WPBeginner.

  15. Hamza Ahmed says

    Thanks a lot, i work very hard with every method i found on internet, but i filled , my problem occur during word-press installation i pasted this code in mid and increase its value to 128 mb , now its works fine, thanks a lot again.

  16. Jeff Danforth says

    My host provides 64MB, and wants a hefty kicker to increase the php memory limit – so I’m inclined to be “green” and reduce my memory use.

    HOW might I determine what plugins or other things to remove to stay under 64MB
    A) php memory consumption, e.g. which plugins are being greedy
    B) have I got a memory leak issue, e.g. any plugins being nasty

    Thank you for this forum, by the way – I am truly a beginner, but excited about WP (grrr, if I can make it jump its hoops right)

  17. Daniel says

    Didn’t work for me, but I’m not sure what it means to be “inside the main php tag”. I opened the file in Dreamweaver and did a search. The word “main” doesn’t appear anywhere on the page. So I put the code in line 2, just after the “<php". Tried it at 64 and 128. Thanks.

  18. Deepanshu says

    Thanks for the help.
    But 64M was already default for me and of course it wasn’t sufficient so I changed it to 96M and I think u should mention this as well.

  19. Jan says

    Nice but nothing works – use rackspace cloud – tried 32 – 64 – 128 – 256- 512 – 1024Mb MU site i can’t go more up and only in admin i can’t get access after a plugin from wpmudev so guess i have to delete that and try something pro.

  20. pathik says

    its really work,, i had problem of internam server,,, when add new plugine,,, i just increse memomry limit
    define(‘WP_MEMORY_LIMIT’, ’64M’);
    in wp-admin and problem solved..

    tthnaks a lot

  21. Joke van de Fliert says

    thanks! for me the provider had to change a setting to increase the memory limit, but that did fix it!

  22. Jennifer Ortiz says

    Thanks a million for this! I got the error message right after the WordPress install–I never even had a chance to add a plug-in.:

    Fatal error: Allowed memory size of 33554432 bytes exhausted…

    All seems to be working fine now.

  23. Timothy Jacobs says

    I have tried to do this, but it has not solved the problem.  I am on 1&1 hosting and I have tried all the changes, but I still get this error whenever uploading a semi-large picture:
     
    Fatal error: Out of memory (allocated 29884416) (tried to allocate 4096 bytes) in /homepages/21/d258522816/htdocs/TBJFilms/WP/wp-includes/media.php on line 1010
     
    What is your suggestion?

  24. aidilgoh says

    Tried placing this at the end of the wp-config.php and didnt work.

    However, placing it on top right after the <?php tag worked. Hooray!

    • Ahmad Zaruq Spain says

      Yes, I used the
      1error_reporting(E_ALL); ini_set(‘display_errors’, 1);
      2
      3define( ‘WP_DEBUG’, true);I found in a post next to this one and was getting an error by using define(‘WP_MEMORY_LIMIT’, ‘128M’); on the last line of my php-config file. Thanks to this comment I placed it right below <?php tag at the top and now the error report is no longer :) I just hope my site doesn't keep crashing on every new plugin install, going to check that now. Thanks to all you geeks out there!

  25. PatrickTyrus says

    this was a great help, but as you noted it could easily be a plugin, or as someone mentioned it could be a memory leak.

    And as others have pointed out, there are memory settings for a reason, some hosts will cut your services if you try to circumvent them.

    Is there a way to check on what’s eating memory?

    I’ll be searching, but this is something that should be listed under related posts, or as a note and link at the end regarding one of the “numerous solutions for it”. Going for the “simplest one” might get you through the day, but is may not be a good long term solution as it may cover up the real problem and delay the inevitable.

    • Alexis O'Neill says

      Worked for me!! I changed my site language to Spanish and I guess that used up the memory. Added the simple line recommended in the post and voilá!! Back in my admin mode. The really helpful part was “Don’t panic!” because my anxiety level was rising fast.
      Thanks ever so much.

    • Kiu Karakas says

      define(‘WP_MEMORY_LIMIT’, ’64M’);
      not solved
      define(‘WP_MEMORY_LIMIT’, ‘164M’);
      solved
      THANKS

  26. wpbeginner says

    @shally1584 There is no = << in our code. So are you sure that you are pasting our code as an independent function and not as part of something else.

  27. shally1584 says

    hi.i tried to adjust memory limit and got this error

    ‘Parse error: syntax error, unexpected ‘=’ in /home/amanerdm/public_html/beaverealty.com/wp-config.php on line 62′

    pls help fix this.thanx.

  28. Luna says

    Thank you for this post… I had a couple of category / archive query pages that were throwing this error after I upgraded to WordPress 3.1. I was just about to re-write the queries until I found your post in a Google search.

    You saved me a lot of work and headaches :)

  29. Kdb says

    I ended up having to switch hosting companies because I couldn’t get my current one to increase the memory from 32MB to, well, anything more. Pretty sad. Took a bit of hassle to transfer three WordPress sites (and multiple other sites), but it was worth it. My current host offers 128MB and my sites are working SO much better. I can actually add plug-ins.

  30. Richard says

    Hello
    I tried the fix by adding the line immediately after the opening >php tag (line 1)
    define(‘WP_MEMORY_LIMIT’, ’64M’);

    It did not work for me BUT
    I placed the line with comments for my own use on (as it happens) line 22 and it worked.

    I am testing this procedure on a test WP site using Twentyten 1.2 Theme

    /home/par*****/public_html/wp-config.php

    Line 22 /** WP memory limit Note it does not work when placed immediately after line 1 */
    define(‘WP_MEMORY_LIMIT’, ’64M’);

  31. Chris says

    This trick doesn’t work for me ever since WP 3.

    what I found worked was to create a PHP.INI file in the wp-admin folder with the line:

    memory_limit = 128M

    (or whatever you want to make it)

  32. kdb says

    I tried this, but my host limits it to 32 megs. Can anyone recommend a good host for WP, because I’m going to have to change. Thanks!

  33. Seth Merrick says

    Great article. A brand new plugin that may soon find its way on to this list is Cobalt WP Boost.

    Check it out here:
    http://frugaltheme.com/about/cobalt-wp-boost-plugin/

    It allows blog owners to raise their WordPress Memory Limits with a couple of mouse clicks, as well as showing at-a-glance memory usage information. WordPress keeps its internal memory limit at 32MB, which is fine for a small-time blog; but if you’re trying to add any robust plugins for social networking or ecommerce applications, 32M will not suffice. This problem can only be expected to worsen with the release of 3.0 which, judging from the beta release, will consume a lot more memory itself without upping the 32MB limit.

  34. W^L+ says

    Just remember that if the problem is a memory leak (either in PHP itself or in some library that is used by a plugin), this will merely delay the occurence.

    Before you change the memory limits, you should ensure that you’re using the most up-to-date versions of any plugins. Be sure you are running the newest version of WP. If your host offers multiple versions of PHP, be sure you’re using version 5.

    Your hosting service may have preset limits on memory usage. If your editing causes you to exceed those limits, your service may be suspended or canceled without warning.

  35. wparena says

    I think the better way is to put this limit in wp-setting.php file where this memory limit already described as 32M, just changed that value to 64M.

  36. Chad McCullough says

    I think that this might fix an issue I’ve been having with my site. I just can’t figure out where the main php table is in the wp-confip.php to place the line.

    Thanks!

返信を残す

コメントありがとうございます。すべてのコメントは私たちのコメントポリシーに従ってモデレートされ、あなたのメールアドレスが公開されることはありませんのでご留意ください。名前欄にキーワードを使用しないでください。個人的で有意義な会話をしましょう。