Case insensitive preg_replace_callback

Question

In the function below, I want to match the keyword case insensitive (should match \"Blue Yoga Mats\" and \"blue yoga mats\")...

However, it currently only matches if the

Answer 1

You can also use T-Regx library:

replace($post->post_content)->callback('doReplace');
      // ↑ Delimiters are not required 

Also, use of $mykeyword might cause user-input characters to break your pattern. With T-Regx you can use Prepared Patterns and just build your pattern:

 $mykeyword  
    // quoting unsafe characters
]);
$pattern->replace($post->post_content)->callback('doReplace');