wp-includes/class-wp-widget.php:163PHP5 constructor.
$id_basestring$namestring$widget_optionsarrayoptionalarray()$control_optionsarrayoptionalarray() public function __construct( $id_base, $name, $widget_options = array(), $control_options = array() ) { if ( ! empty( $id_base ) ) { $id_base = strtolower( $id_base ); } else { $id_base = preg_replace( '/(wp_)?widget_/', '', strtolower( get_class( $this ) ) ); } $this->id_base = $id_base; $this->name = $name; $this->option_name = 'widget_' . $this->id_base; $this->widget_options = wp_parse_args( $widget_options, array( 'classname' => str_replace( '\\', '_', $this->option_name ), 'customize_selective_refresh' => false, ) ); $this->control_options = wp_parse_args( $control_options, array( 'id_base' => $this->id_base ) ); }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.