Title: Plugin Compatibility Issue with PHP 8.3
Last modified: December 27, 2024

---

# Plugin Compatibility Issue with PHP 8.3

 *  [Prachi Vashishtha](https://wordpress.org/support/users/prachi-vashishtha/)
 * (@prachi-vashishtha)
 * [1 year, 5 months ago](https://wordpress.org/support/topic/plugin-compatibility-issue-with-php-8-3/)
 * I wanted to report that the plugin is not fully compatible with PHP 8.3. Upon
   running it in a PHP 8.3 environment, the following warning is generated:
   1 result–
   1 file
 * vendor\composer\ClassLoader.php:
 *   538              foreach ($this->prefixesPsr0[$first] as $prefix => $dirs) {
 *   539:                 if (0 === strpos($class, $prefix)) {
 *   540                      foreach ($dirs as $dir) {
 * This issue seems to be related to deprecated functionality or compatibility issues
   in the `ClassLoader.php` file. It would be great if the plugin developers could
   investigate and update the codebase to ensure compatibility with PHP 8.3.

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

 *  Plugin Author [Mateusz Gbiorczyk](https://wordpress.org/support/users/mateuszgbiorczyk/)
 * (@mateuszgbiorczyk)
 * [1 year, 5 months ago](https://wordpress.org/support/topic/plugin-compatibility-issue-with-php-8-3/#post-18217445)
 * Hi [@prachi-vashishtha](https://wordpress.org/support/users/prachi-vashishtha/),
 * Thank you for your message.
 * Please tell me in what exact situation is this warning generated? I have an environment
   with PHP 8.3 and I can’t reproduce the situation for this warning to occur.
 * Best,
    Mateusz
 *  Thread Starter [Prachi Vashishtha](https://wordpress.org/support/users/prachi-vashishtha/)
 * (@prachi-vashishtha)
 * [1 year, 4 months ago](https://wordpress.org/support/topic/plugin-compatibility-issue-with-php-8-3/#post-18219610)
 * I can see this type of warnigns:
 * **Deprecated**: strpos(): Passing null to parameter #1 ($haystack) of type string
   is deprecated in **/var/www/csi/html/wp-includes/functions.php** on line **7329**
 * **Deprecated**: str_replace(): Passing null to parameter #3 ($subject) of type
   array|string is deprecated in **/var/www/csi/html/wp-includes/functions.php**
   on line **2189**
 * **Deprecated**: rtrim(): Passing null to parameter #1 ($string) of type string
   is deprecated in **/var/www/csi/html/wp-includes/formatting.php** on line **2819**
 *  Plugin Author [Mateusz Gbiorczyk](https://wordpress.org/support/users/mateuszgbiorczyk/)
 * (@mateuszgbiorczyk)
 * [1 year, 3 months ago](https://wordpress.org/support/topic/plugin-compatibility-issue-with-php-8-3/#post-18273579)
 * [@prachi-vashishtha](https://wordpress.org/support/users/prachi-vashishtha/) 
   From what I see, the paths point to another file, not to our plugin file.

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

The topic ‘Plugin Compatibility Issue with PHP 8.3’ is closed to new replies.

 * ![](https://ps.w.org/acf-better-search/assets/icon-256x256.png?rev=2636287)
 * [ACF: Better Search](https://wordpress.org/plugins/acf-better-search/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/acf-better-search/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/acf-better-search/)
 * [Active Topics](https://wordpress.org/support/plugin/acf-better-search/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/acf-better-search/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/acf-better-search/reviews/)

 * 3 replies
 * 2 participants
 * Last reply from: [Mateusz Gbiorczyk](https://wordpress.org/support/users/mateuszgbiorczyk/)
 * Last activity: [1 year, 3 months ago](https://wordpress.org/support/topic/plugin-compatibility-issue-with-php-8-3/#post-18273579)
 * Status: not resolved