Title: Deprecated issues with wp-includes/functions.php
Last modified: April 10, 2024

---

# Deprecated issues with wp-includes/functions.php

 *  Resolved [rferland9831](https://wordpress.org/support/users/rferland9831/)
 * (@rferland9831)
 * [2 years, 2 months ago](https://wordpress.org/support/topic/deprecated-issues-with-wp-includes-functions-php/)
 * My site is now running WordPress 6.5.2 and when logging into my Dashboard I first
   have to scroll past a list of errors to get to it. The list of errors mainly 
   consists of issues with deprecated commands(see list).
 *     ```wp-block-code
       Deprecated: strpos(): Passing null to parameter #1 ($haystack) of type string is deprecated in /home3/createdp/public_html/wp-includes/functions.php on line 7288Deprecated: str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /home3/createdp/public_html/wp-includes/functions.php on line 2187Deprecated: strpos(): Passing null to parameter #1 ($haystack) of type string is deprecated in /home3/createdp/public_html/wp-includes/functions.php on line 7288Deprecated: str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /home3/createdp/public_html/wp-includes/functions.php on line 2187Deprecated: strpos(): Passing null to parameter #1 ($haystack) of type string is deprecated in /home3/createdp/public_html/wp-includes/functions.php on line 7288Deprecated: str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /home3/createdp/public_html/wp-includes/functions.php on line 2187Deprecated: strpos(): Passing null to parameter #1 ($haystack) of type string is deprecated in /home3/createdp/public_html/wp-includes/functions.php on line 7288Deprecated: str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /home3/createdp/public_html/wp-includes/functions.php on line 2187Warning: Cannot modify header information - headers already sent by (output started at /home3/createdp/public_html/wp-includes/functions.php:7288) in /home3/createdp/public_html/wp-admin/includes/misc.php on line 1439Warning: Cannot modify header information - headers already sent by (output started at /home3/createdp/public_html/wp-includes/functions.php:7288) in /home3/createdp/public_html/wp-includes/functions.php on line 7096Warning: Cannot modify header information - headers already sent by (output started at /home3/createdp/public_html/wp-includes/functions.php:7288) in /home3/createdp/public_html/wp-admin/admin-header.php on line 9Warning: Cannot modify header information - headers already sent by (output started at /home3/createdp/public_html/wp-includes/functions.php:7288) in /home3/createdp/public_html/wp-includes/option.php on line 1486Warning: Cannot modify header information - headers already sent by (output started at /home3/createdp/public_html/wp-includes/functions.php:7288) in /home3/createdp/public_html/wp-includes/option.php on line 1487
       ```
   
 * I’m not a techie and have no idea on why this started or how to fix this. I’ve
   checked the known issues with Theme and/or Plugins and found none.
 * Please help!

Viewing 2 replies - 1 through 2 (of 2 total)

 *  [Jamie](https://wordpress.org/support/users/codente/)
 * (@codente)
 * [2 years, 2 months ago](https://wordpress.org/support/topic/deprecated-issues-with-wp-includes-functions-php/#post-17677708)
 * Have you already tested with no plugins and a default theme active? That would
   rule your plugins and theme in or out.
 *  Thread Starter [rferland9831](https://wordpress.org/support/users/rferland9831/)
 * (@rferland9831)
 * [2 years, 1 month ago](https://wordpress.org/support/topic/deprecated-issues-with-wp-includes-functions-php/#post-17714192)
 * Thanks for the advice. I deactivated all plugins then re-activated them one at
   a time until the problem resurfaced. Two plugins were at fault: WN Flipbox Pro
   and Contact Form Builder by vcita. Once I deactivated both of them the problems
   went away.

Viewing 2 replies - 1 through 2 (of 2 total)

The topic ‘Deprecated issues with wp-includes/functions.php’ is closed to new replies.

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 2 replies
 * 2 participants
 * Last reply from: [rferland9831](https://wordpress.org/support/users/rferland9831/)
 * Last activity: [2 years, 1 month ago](https://wordpress.org/support/topic/deprecated-issues-with-wp-includes-functions-php/#post-17714192)
 * Status: resolved

## Topics

### Topics with no replies

### Non-support topics

### Resolved topics

### Unresolved topics

### All topics