wp-admin/includes/class-wp-filesystem-direct.php:26Constructor.
$argmixed public function __construct( $arg ) { // The $arg parameter is required for signature parity with the other transports, but is unused here. unset( $arg ); $this->method = 'direct'; $this->errors = new WP_Error(); }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.