wp-admin/includes/class-wp-filesystem-direct.php:214Changes the owner of a file or directory.
$filestring$ownerstring|int$recursivebooloptionalfalsebool public function chown( $file, $owner, $recursive = false ) { if ( ! $this->exists( $file ) ) { return false; } if ( ! $recursive ) { return chown( $file, $owner ); } if ( ! $this->is_dir( $file ) ) { return chown( $file, $owner ); } // Is a directory, and we want recursive. $filelist = $this->dirlist( $file ); foreach ( $filelist as $filename ) { $this->chown( $file . '/' . $filename, $owner, $recursive ); } return true; }Introduced in 2.5.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-admin/includes/class-wp-filesystem-direct.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.