Notice in debug mode

Hello!

Recently I enabled wp-debug to see if I have any errors and I noticed that by having WPBruiser enabled the following notice appears:

Deprecated: preg_replace(): The /e modifier is deprecated, use preg_replace_callback instead in /home/www/site/site.com/www/wp-content/plugins/goodbye-captcha/includes/utils/MchGdbcIPUtils.php on line 201

I opened the file with Notepad++ and line 201 is the following:
substr(chunk_split(bin2hex($binaryString), 4, ‘:’), 0, -1));

I’m not too familiar with code so I wanted to ask you.
What does it mean and how can it be fixed?

Please let me know.
Thanks!

• This topic was modified 9 years, 3 months ago by catmaniax.