wp-includes/class-wp-matchesmapregex.php:65Substitute substring matches in subject.
$subjectstring$matchesarraystring public static function apply( $subject, $matches ) { $result = new WP_MatchesMapRegex( $subject, $matches ); return $result->output; }Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/class-wp-matchesmapregex.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.