[Plugin: Relevanssi – A Better Search] Error when performing phrase searches with slashes

For starters, update your plugin. You’re running an old version (latest version has only 380 lines in relevanssi.php). If the problem persists, let me know.

If the new version of Relevanssi works fine, I will… There are to many users here in the forums that report that they have problems. So I’m afraid to upgrade.

Well, at least it’ll fix this problem.

Also, remember that there are more people who’ve upgraded to the latest version without problems, they just don’t come to the forum to mention it. About half of the people using Relevanssi are using one of the three latest versions, and they’re not all here complaining about problems.

If you want to fix the problem, you can edit the files. Find the line with the errors, it should look something like this:

if ($word_boundaries) {
			$excerpt = preg_replace("/(\b$pr_term|$pr_term\b)(?!([^<]+)?>)/iu", $start_emp_token . '\\1' . $end_emp_token, $excerpt);
		}
		else {
			$excerpt = preg_replace("/($pr_term)(?!([^<]+)?>)/iu", $start_emp_token . '\\1' . $end_emp_token, $excerpt);
		}

Change it to this:

$pr_term = preg_quote($term, '/');
		if ($word_boundaries) {
			$excerpt = preg_replace("/(\b$pr_term|$pr_term\b)(?!([^<]+)?>)/iu", $start_emp_token . '\\1' . $end_emp_token, $excerpt);
		}
		else {
			$excerpt = preg_replace("/($pr_term)(?!([^<]+)?>)/iu", $start_emp_token . '\\1' . $end_emp_token, $excerpt);
		}

The important thing is the preg_quote(), that’s what fixes the problem you’re having.