Title: PHP Error
Last modified: August 21, 2016

---

# PHP Error

 *  Resolved [KTS915](https://wordpress.org/support/users/kts915/)
 * (@kts915)
 * [12 years ago](https://wordpress.org/support/topic/php-error-89/)
 * I notice that khansariamirreza reported this error before, and that that report
   has been marked as “resolved.” However, I am getting exactly the same error, 
   namely:
 * `wp-content/plugins/posts-in-sidebar/posts-in-sidebar-widget.php:95`
 * Since you apparently couldn’t see it before, could you, perhaps, try using Query
   Monitor to see the error message?
 * Thanks for looking into this!
 * [https://wordpress.org/plugins/posts-in-sidebar/](https://wordpress.org/plugins/posts-in-sidebar/)

Viewing 9 replies - 1 through 9 (of 9 total)

 *  Plugin Author [Aldo Latino](https://wordpress.org/support/users/aldolat/)
 * (@aldolat)
 * [12 years ago](https://wordpress.org/support/topic/php-error-89/#post-4970150)
 * In my test environments, I can’t see this PHP notice. I tried _Query Monitor_
   and nothign is reported.
 * That notice could be generated by some weird interaction with some plugin.
 * Could you test _Posts in Sidebar_ in a test environment whithout installing any
   plugin?
 *  Thread Starter [KTS915](https://wordpress.org/support/users/kts915/)
 * (@kts915)
 * [12 years ago](https://wordpress.org/support/topic/php-error-89/#post-4970185)
 * Thanks for responding!
 * I have now tried deactivating all other plugins, but it made no difference. Then
   I switched to the twentyfourteen theme, and the problem disappeared. So it seems
   to be a theme conflict, but actually it’s more complicated than that.
 * I am using the theme Tiny Forge, which is based on an amalgam of previous default
   themes, so there should be no problem with it. And, sure enough, if I switch 
   to that, there’s no problem with this plugin. However, as soon as I make a child
   theme from Tiny Forge (in fact, it ships with one) the problem recurs.
 * So the issue seems to be something to do with child themes (or, at least, a child
   theme of Tiny Forge). Very odd!
 *  Plugin Author [Aldo Latino](https://wordpress.org/support/users/aldolat/)
 * (@aldolat)
 * [12 years ago](https://wordpress.org/support/topic/php-error-89/#post-4970207)
 * I just installed _Tiny Forge_ theme and no problem here. Then I created a child
   theme of _Tyny Forge_ and no problem.
 * My child theme is made with the `style.css` file only, which has these lines:
 *     ```
       /*
       Theme Name:     Tiny Forge Child
       Theme URI:      http: //www.example.com
       Description:    Child theme for Tiny Forge theme
       Author:         Aldo
       Author URI:     http://www.example.com
       Template:       tiny-forge
       Version:        1.0
       */
   
       /*
        * Imports the style.css of the parent theme
        * ***********************************************************************/
       @import url("../tiny-forge/style.css");
       ```
   
 * Could you share with me your child theme?
 *  Thread Starter [KTS915](https://wordpress.org/support/users/kts915/)
 * (@kts915)
 * [12 years ago](https://wordpress.org/support/topic/php-error-89/#post-4970208)
 * My child theme is simply the one that comes packaged with Tiny Forge (in `tiny-
   forge/inc/tiny-forge-child-example.zip`).
 * One difference that strikes me immediately is that this doesn’t use `@import`.
   It uses the much better technique of enqueuing scripts and CSS from its own `
   functions.php` file.
 *  Plugin Author [Aldo Latino](https://wordpress.org/support/users/aldolat/)
 * (@aldolat)
 * [12 years ago](https://wordpress.org/support/topic/php-error-89/#post-4970209)
 * Just installed the child theme from Tyny Forge and nothing happens (i.e. nothing
   is reported).
 *  Thread Starter [KTS915](https://wordpress.org/support/users/kts915/)
 * (@kts915)
 * [12 years ago](https://wordpress.org/support/topic/php-error-89/#post-4970211)
 * Well, I guess that’s where we came in!
 * I am going to re-check everything because I must have missed something.
 *  Thread Starter [KTS915](https://wordpress.org/support/users/kts915/)
 * (@kts915)
 * [12 years ago](https://wordpress.org/support/topic/php-error-89/#post-4970213)
 * I’m at a complete loss. I have deactivated every plugin except Posts in Sidebar
   and Query Monitor, activated a clean child theme of Tiny Forge, and the error
   shows up. If I switch to the parent theme, no problem. I tried reactivating each
   plugin one by one with the parent theme, but still no problem. Back to the child
   theme, and it’s there.
 * So it’s something to do with the child theme, but I have no idea what. To make
   matters worse, this is happening on my localhost development installation, where
   I am getting just the one error. I have just activated Query Monitor on my live
   site, and it shows SEVEN errors, including this one.
 * The differences (so far as I know) are that my localhost setup is running 5.3.10-
   1ubuntu3.11, MySQL 5.5.37, and Apache 2.2.22, whereas the live site is running
   PHP 5.4.27, MySQL 5.6.16, and Apache 2.2.26.
 * Does this, perhaps, provide any clues?
 *  Plugin Author [Aldo Latino](https://wordpress.org/support/users/aldolat/)
 * (@aldolat)
 * [12 years ago](https://wordpress.org/support/topic/php-error-89/#post-4970215)
 * My localhost environment is:
 *     ```
       PHP 5.5.9-1ubuntu4
       MySQL 5.5.37
       ```
   
 * About the “error”, please note that it’s only a PHP notice, and it’s safe. It
   only says: Hey, the variable $xyz is not defined”.
 * About the seven errors you see in your live site, are they real errors or only
   notices? Are they generated by my plugin or by anything else?
 *  Thread Starter [KTS915](https://wordpress.org/support/users/kts915/)
 * (@kts915)
 * [12 years ago](https://wordpress.org/support/topic/php-error-89/#post-4970217)
 * The seven issues are as follows:
 *     ```
       Undefined index: container_class
       wp-content/plugins/posts-in-sidebar/posts-in-sidebar-widget.php:55
   
       Undefined index: post_not_in
       wp-content/plugins/posts-in-sidebar/posts-in-sidebar-widget.php:76	
   
       Undefined index: image_before_title
       wp-content/plugins/posts-in-sidebar/posts-in-sidebar-widget.php:89	
   
       Undefined index: utility_after_title
       wp-content/plugins/posts-in-sidebar/posts-in-sidebar-widget.php:95	
   
       Undefined index: cached
       wp-content/plugins/posts-in-sidebar/posts-in-sidebar-widget.php:136	
   
       Undefined index: cache_time
       wp-content/plugins/posts-in-sidebar/posts-in-sidebar-widget.php:137	
   
       Undefined index: container_class
       wp-content/plugins/posts-in-sidebar/posts-in-sidebar-widget.php:144
       ```
   

Viewing 9 replies - 1 through 9 (of 9 total)

The topic ‘PHP Error’ is closed to new replies.

 * ![](https://s.w.org/plugins/geopattern-icon/posts-in-sidebar_aed6f1.svg)
 * [Posts in Sidebar](https://wordpress.org/plugins/posts-in-sidebar/)
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 * 9 replies
 * 2 participants
 * Last reply from: [KTS915](https://wordpress.org/support/users/kts915/)
 * Last activity: [12 years ago](https://wordpress.org/support/topic/php-error-89/#post-4970217)
 * Status: resolved