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1. Old Cow
   Member
   Posted 1 year ago #
   

   I try to install new plugins (doesn't matter which one) to any WP website on the server from WP admin, and I receive the error:

   Installing Plugin: Empty Tags Remover 1.0
   Downloading install package from http://downloads.wordpress.org/plugin/empty-tags-remover.zip…
   Unpacking the package…

   Installing the plugin…
   Warning: array_keys() expects parameter 1 to be array, boolean given in .../wp-admin/includes/class-wp-upgrader.php on line 189
   The package could not be installed. The plugin contains no files.
   Plugin install failed.Down

   WP is able to download the zip folder into to the .../wp-content/upgrade folder, but then cannot proceed to install it.

   Could it be a WP issue or incompatibility with PHP or MySQL?

   WordPress version 3.3.1
   PHP version 5.3.10
   MySQL version 5.1.61

2. esmi
   Theme Diva & Forum Moderator
   Posted 1 year ago #
   

   What happens if you upload these plugins manually?

3. Old Cow
   Member
   Posted 1 year ago #
   

   I can activate manually uploaded plugins.

   But I like to fix this, because when a new WP version arrives I am unable to run the update for the database.

4. esmi
   Theme Diva & Forum Moderator
   Posted 1 year ago #
   

   Try re-uploading the wp-admin and wp-includes folders from a fresh download of WordPress.

5. Old Cow
   Member
   Posted 1 year ago #
   

   I did this already, before posting this thread.

6. esmi
   Theme Diva & Forum Moderator
   Posted 1 year ago #
   

   Can you see the zip files in the wp-contents/upload folder? If so, can you check that they do have some real content inside?

7. Old Cow
   Member
   Posted 1 year ago #
   

   Yes.

   i.e. the Empty Tags Remover folder carries the same files, as when I download the plugin from the WP site: empty-tags-remover.php and readme.txt.

8. Old Cow
   Member
   Posted 1 year ago #
   

   Could it be that WordPress 3.3.1 is not ready for PHP 5.3.10 or MySQL 5.1.61?

9. esmi
   Theme Diva & Forum Moderator
   Posted 1 year ago #
   

   No - that's not the problem but it could be a server issue. PHP may be missing ZipArchive.

10. Old Cow
    Member
    Posted 1 year ago #
    

    Indeed, it looks like a PHP issue. Where can a find a complete list of PHP modules recommended and required by WP?

11. Old Cow
    Member
    Posted 1 year ago #
    

    I installed ZipArchive, still can't install/upgrade plugins from WP admin. In which table/field do I find the login credentials for FTP/SFTP? Maybe we have changed this, and WP does not get the proper access?

12. Old Cow
    Member
    Posted 1 year ago #
    

    When I include FTP/SSH constants into the wp-config.php

    define('FS_METHOD', 'ftpext');
    define('FTP_BASE', '/path/to/wordpress/');
    define('FTP_CONTENT_DIR', '/path/to/wordpress/wp-content/');
    define('FTP_PLUGIN_DIR ', '/path/to/wordpress/wp-content/plugins/');
    define('FTP_USER', 'username');
    define('FTP_PASS', 'password');
    define('FTP_HOST', 'ftp.example.org:21');

    I am able to install and delete plugins from WP admin now.

    When I install a new plugin, I get stuck with the message:
    Installing Plugin: plugin-name
    Downloading install package from http://downloads.wordpress.org/plugin/plugin-name.zip…

    I can go to Plugins and activate them, but something??? still prohibits finalizing the install. Any idea?

    Do you know where I have to make changes on the server to avoid these constants on all sites?

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