Title: Strict standards & undefined function call error
Last modified: August 21, 2016

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# Strict standards & undefined function call error

 *  [flynsarmy](https://wordpress.org/support/users/flynsarmy/)
 * (@flynsarmy)
 * [12 years, 9 months ago](https://wordpress.org/support/topic/strict-standards-error-4/)
 * When visiting page 2 of my blog I get the error:
 * > Strict standards: Declaration of W3_Cache_Apc::delete() should be compatible
   > with W3_Cache_Base::delete($key, $group = ”) in /path/to/wp-content/plugins/
   > w3-total-cache/lib/W3/Cache/Apc.php on line 15
 * Call stack: [http://i.imgur.com/DVPMGZv.png](http://i.imgur.com/DVPMGZv.png)
 * > Fatal error: Call to undefined function apply_filters() in /path/to/wp-content/
   > plugins/w3-total-cache/inc/define.php on line 119
 * Call stack: [http://i.imgur.com/Hy3qzC6.png](http://i.imgur.com/Hy3qzC6.png)
 * This is after upgrading my site from WP 3.5 to 3.6. PHP Version 5.5.1-1~precise
   +1
 * Edit: Bug #2 is already resolved [here](http://wordpress.org/support/topic/fatal-error-call-to-undefined-function-apply_filters-in-definephp-on-line-11?replies=6).
 * [http://wordpress.org/plugins/w3-total-cache/](http://wordpress.org/plugins/w3-total-cache/)

Viewing 3 replies - 1 through 3 (of 3 total)

 *  [Bluemad](https://wordpress.org/support/users/bluemad/)
 * (@bluemad)
 * [12 years, 8 months ago](https://wordpress.org/support/topic/strict-standards-error-4/#post-3995860)
 * Yes, I got the same issue.
 *  [Chuck Reynolds](https://wordpress.org/support/users/ryno267/)
 * (@ryno267)
 * [12 years, 8 months ago](https://wordpress.org/support/topic/strict-standards-error-4/#post-3995868)
 * yup same issue. bug 1 in this list fyi
 *  [UFHH01](https://wordpress.org/support/users/ufhh/)
 * (@ufhh)
 * [12 years, 6 months ago](https://wordpress.org/support/topic/strict-standards-error-4/#post-3995889)
 * … still confirmed in 3.7

Viewing 3 replies - 1 through 3 (of 3 total)

The topic ‘Strict standards & undefined function call error’ is closed to new replies.

 * ![](https://ps.w.org/w3-total-cache/assets/icon-256x256.png?rev=1041806)
 * [W3 Total Cache](https://wordpress.org/plugins/w3-total-cache/)
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 * 3 replies
 * 4 participants
 * Last reply from: [UFHH01](https://wordpress.org/support/users/ufhh/)
 * Last activity: [12 years, 6 months ago](https://wordpress.org/support/topic/strict-standards-error-4/#post-3995889)
 * Status: not resolved