Why this pattern with __FILE__ under preg_quote() is not matching the directory path?

Question

This pattern with __FILE__ under preg_quote( $str, '/' )

/^C\:\\xampp\\apps\\wordpress\\htdocs\\wp\-content\\themes\\themename\\inc\\fonts\/uploads\/[^\/\\]+(\/|\\)/

is not matching this directory path

C:\xampp\apps\wordpress\htdocs\wp-content\themes\themename\inc\fonts/uploads\BELLABOO\

here (just exclude BELLABOO\BELLABOO-Regular.otf)

C:\xampp\apps\wordpress\htdocs\wp-content\themes\themename\inc\fonts/uploads\BELLABOO\BELLABOO\BELLABOO-Regular.otf

But upon doing this with custom pattern, it is matching:

$pattern = '/.+inc(\/|\\\\)fonts(\/|\\\\)uploads(\/|\\\\)[^\/\\\\]+(\/|\\\\)/';
// $pattern = '/^C\:\\xampp\\apps\\wordpress\\htdocs\\wp\-content\\themes\\themename\\inc\\fonts\/uploads\/[^\/\\]+(\/|\\)/'; Not working!
preg_match( $pattern, $font_path, $matches );
echo $matches[0]; // C:\xampp\apps\wordpress\htdocs\wp-content\themes\themename\inc\fonts/uploads\BELLABOO\

How to make it work with the first pattern?

Answer 1

Change the pattern:

/^C\:\\xampp\\apps\\wordpress\\htdocs\\wp\-content\\themes\\themename\\inc\\fonts\/uploads\/[^\/\\]+(\/|\\)/

With:

/^C\:\\xampp\\apps\\wordpress\\htdocs\\wp\-content\\themes\\themename\\inc\\fonts\/uploads\\[^\/\\]+(\/|\\)/