Issue

When using the search functionality on the /posts page, if the input contains the character [, the following error occurs:

Warning:
preg_match(): Compilation failed: missing terminating ] for character class at offset 7

Cause
The regex used for searching does not properly escape special characters like [ before applying preg_match().

Expected Behavior

The search should handle special characters safely and not cause a regex compilation error.

Steps to Reproduce

Go to the /posts page.
Enter a search query that includes [ (e.g., [test).
Observe the error message.

Suggested Fix

Ensure that special characters like [ are properly escaped before passing them to preg_match(). Using preg_quote() in PHP can help prevent this issue.