How to set the title separator in Yoast SEO to any character

Yoast SEO Settings

From Search Appearance > General > Title Separator

First, select "|" and save.

At this point, the title tag will be output as follows.

<title>Company Profile | Site Title</title>

Add to functions.php

Add the following.

//Change Yoast SEO separator
function my_wpseo_title($title) {
	//Replace " | ", " |", "| " etc. with "｜"
	$title = preg_replace('/\s?\|\s?/u', '｜', $title);

	return $title;
} 
add_filter('wpseo_title', 'my_wpseo_title'); //Change title
add_filter('wpseo_opengraph_title', 'my_wpseo_title'); //Also change og:title

In line 4, '(space)|(space)' is replaced with '｜'.

$title = preg_replace('/\s?\|\s?/u', '｜', $title);

If you want to change the separator to a different character, please modify the second argument to your preference.

If the separator has been replaced like this, it's a success.

<title>Company Profile｜Site Title</title>

Comments

If you found something different in your environment, please feel free to comment.