wp-includes/class-wp-widget.php:216Constructs name attributes for use in form() fields
$field_namestringstring public function get_field_name( $field_name ) { $pos = strpos( $field_name, '[' ); if ( false !== $pos ) { // Replace the first occurrence of '[' with ']['. $field_name = '[' . substr_replace( $field_name, '][', $pos, strlen( '[' ) ); } else { $field_name = '[' . $field_name . ']'; } return 'widget-' . $this->id_base . '[' . $this->number . ']' . $field_name; }Introduced in 2.8.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/class-wp-widget.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.